M60 Machine Gun Disassembly

CLEARING

Clearing is always the first step upon receiving an M60 or preparing it for disassembly. To clear the MGO:

(1) Put the safety on FIRE.

(3) Put the safety on SAFE and return the cocking handle to its forward position.

(4) Raise the cover, inspect the tray, and remove links or ammunition.

(5) Raise the tray and inspect the chamber to insure that no rounds are present.

(6) Close the cover, place the safety on FIRE, pull the cocking handle to the rear, and pull the trigger while manually easing the bolt forward.

(7) Place the safety on SAFE and raise the cover. (If not disassembling the gun, keep the cover down.)

THE BOLT MUST USE : EASED FORWARD TO PREVENT DAMAGE TO THEFEED-TflAY ASSEMBLY AND : OÊÊRATING-ROD ASSEMBLY, OO NOT CLOSE THE COVER WiTHTHEBOLTFORWARD.TO 1 DO SO WOÙLO DAMAGE PARTS Of t^OTH THE COVER AND THC ! r " '■ : " ; "

REMOVING THE STOCK

To remove the stock, raise the shoulder rest, insert the nose of the cartridge into the latch hole, and depress the latch.

With the latch depressed, remove the stock by pulling it directly to the rear. It is important that the stock group be removed in this way to prevent damage to the buffer lock.

REMOVING THE STOCK

M60 Machine Gun Butt Stock Latch
LATCH

REMOVING THE BUFFER AND OPERATING-ROD ASSEMBLIES,

AND THE BOLT

The buffer assembly consists of the buffer and the buffer yoke. The operating-rod assembly consists of the driving-spring guide, driving spring, and operating rod. The bolt is removed with the operating-rod assembly.

To remove the buffer assembly, hold the palm of the hand against the exposed buffer and press forward LIGHTLY, Remove the buffer yoke by pulling it straight up and away from the receiver assembly.

Withdraw the buffer slowly. Allow the driving spring to expand until the end of the driving-spring guide is exposed at the rear of the receiver group.

Separate the buffer from the driving-spring guide.

Pull the driving spring and driving-spring guide from the receiver group and separate the two parts.

With the left hand, grasp the trigger-mechanism group to stabilize the gun. With the right hand, pull the cocking handle slowly to the rear until the bolt is separated from the barrel socket about 2 inches. Return the cocking handle to the forward position. Place a finger on the face of the bolt and push until the linger makes contact with the bridge at the end of the receiver.

The operating rod and bolt are now exposed approximately 10 cm (4 in) to the rear of the receiver. Hold them securely, to keep the bolt from rotating, and remove them from the receiver; then relax the grip and let the bolt rotate slowly to the right.

REMOVING THE BUFFER AND OPERATiNG-ROD

ASSEMBLIES. AND THE BOLT

M60 Bolt Assembly

REMOVING THE BUFFER-YOKE

DRfVING-SPRING GUIDE

BUFFER PLUNGER

DRfVING-SPRING GUIDE

BUFFER PLUNGER

Buffer Yoke

REMOVING THE BUFFER-YOKE

SEPARATING THE BUFFER FROM THE DRIVING - SPRING GUIDE

REMOVING THE BUFFER AND OPERATING-ROD

ASSEMBLIES, AND THE BOLT

(CONTINUED)

BRIDGE OF RECEIVER

BRIDGE OF RECEIVER

MOVING THE BOLT TO THE REAR OF THE RECEIVER GROUP

BOLT

BOLT

M60 Machine Gun Reciever

OPERATING ROD

WITHDRAWING THE BOLT AND OPERATING-ROD FROM THE RECEIVER

GROUP

OPERATING ROD

MOVING THE BOLT TO THE REAR OF THE RECEIVER GROUP

WITHDRAWING THE BOLT AND OPERATING-ROD FROM THE RECEIVER

GROUP

SEPARATING THE BOLT ASSEMBLY FROM THE OPERATING ROD ASSEMBLY

Hold the bolt with one hand, operating rod on top. With the other hand push forward and up on the operating rod, and disengage it from the bolt.

SEPARATING THE BOLT ASSEMBLY FROM THE OPERATING-ROD ASSEMBLY

Open Bolt Sear And Trigger Mechanisms

REMOVING THE TRIGGER-MECHANISM GROUP

The trigger-mechanism group consists of the grip, leaf spring, and retaining pin (this retaining pin is interchangeable with the sear pin).

To remove the trigger-mechanism group, depress the rear of the leaf spring and rotate the rear end up to clear it from the sear pin-Pull to the rear to disengage the front notch of the leaf spring from the retaining pin.

Remove the retaining pin by pushing it to the left.

Slide the trigger-mechanism group slightly forward, rotating the front down, and remove it.

REMOVING THE TRIGGER-MECHANISM GROUP

Leaf Spring M60 Trigger

RETAINING PIN

REMOVING THE LEAF SPRING

RETAINING PIN

REMOVING THE LEAF SPRING

Remov Pkm Machine Gun Trigger

HOLDING

HOLDING

REMOVING THE TRIGGER-MECHANISM GROUP

REMOVING THE BARREL GROUP

The barrel group consists of the barrel, flash suppressor, front sight, bipod assembly, and gas system. Push in on the barreUocking-lever plunger and raise the barrel-locking lever to the vertical position. Remove the barrel group by pulling it straight to the front.

M60 Machine Gun With Railed Front End

REMOVING THE BARREL GROUP

BARREL-LOCKING-LEVER PLUNGER

BARREL-LOCKING-LEVER PLUNGER

M60 Machine Gun Barrel Case

UNLOCKING THE BARREL

UNLOCKING THE BARREL

Aa52 Machine Gun Lever Locking

REMOVING THE BARREL GROUP

REMOVING THE COVER, FEED TRAY, AND HANGER GROUP

With the cover raised, use a pointed object to unlock the hinge pin latch and push it through the hinge pin by pushing on the half-moon-shaped end. Remove it from the left side.

Remove the hinge pin by pulling it from the right side. Lift the cover from the receiver assembly. Remove the spring from the cover. Raise the feed tray and hanger group and remove them from the receiver assembly.

REMOVING THE COVER, FEED TRAY, AND HANGER GROUP

HINGE-FIN

HINGE-FIN

HINGE-PIN LATCH

M60 Hanger

REMOVING THE HINGE PIN AND THE HINGE-PIN LATCH

HINGE-PIN LATCH

REMOVING THE HINGE PIN AND THE HINGE-PIN LATCH

FEED TRAY AND HANGER ASSEMBLY

FEED TRAY AND HANGER ASSEMBLY

REMOVING THE HANGER GROUP

TRAY AND

REMOVING THE HANGER GROUP

TRAY AND

REMOVING THE FOREARM ASSEMBLY

Press down with a pointed object to release the forearm latch. Slightly raise the rear of the forearm assembly and remove it toward the front.

REMOViNG THE FOREARM ASSEMBLY

mmmm

GENERAL ASSEMBLY

REPLACING THE FOREARM ASSEMBLY

To replace the forearm assembly, slide it over the operating-rod tube, insuring that the operating-rod tube does not strike the baffles inside the forearm assembly. Aline the recess in the forearm assembly with the end of the operating-rod tube.

Tap upward on the bottom rear of the forearm assembly with the palm of the hand to lock it into position.

REPLACING THE COVER, FEED TRAY, AND HANGER GROUP

To replace the feed tray and hanger group, aline the guides on the left side of the cover-mounting brackets.

To replace the cover, insert the spring into the cover and then insert the cover spring in the well of the receiver assembly. Aline the cover with the mounting bracket.

Insert the hinge pin from the right side, and then insert the hinge-pin latch from the left side, making sure that the hinge pin and hinge-pin latch interlock.

REPLACING THE FEED TRAY AND HANGER GROUP

FEEDTHAY AND HANGER ASSEMBLY

COVER

FEEDTHAY AND HANGER ASSEMBLY

REPLACING THE FEED TRAY AND HANGER GROUP

HINGE-PIN

HINGE-PIN LATCH

HINGE-PIN

HINGE-PIN LATCH

M60 Feed Lever Retaining Spring

REPLACING THE HINGE PIN AND HINGE-PIN LATCH

REPLACING THE BARREL GROUP

Insure that the barrel-locking lever is in the vertical position.

Insert the rear of the barrel into the forearm assembly and aline the gas system on the bottom of the barrel with the operating-rod tube.

Lower the barrel-locking lever. Insure that the gas system and operating-rod tube are fully seated.

M60 Operating Rod

FM 23-67

REPLACING THE TRIGGER-MECHANISM GROUP

Engage the holding notch of the trigger-mechanism group in its recess on the bottom of the receiver group. Rotate the front of the trigger mechanism up and aline the holes of the grip with the mounting bracket on the receiver group.

JOINING THE BOLT TO THE OPERATING ROD

Hold the bolt securely in one hand with the face of the bolt toward the body and the camming slot up. With the other hand, put the rear of the operating-rod yoke against the rear firing-pin spool.

Push the operating rod forward and down, compressing the firing-pin spring, and put the operating rod yoke between the two firing-pin spools.

When replacing the retaining pin, insert it from the left. Attach the leaf spring by placing the open end of the leaf spring on the forward retaining pin, and then engage the hooked end over the sear pin (rear pin).

REPLACING THE TRIGGER-MECHANISM GROUP

Open Bolt Sear And Trigger Mechanisms

HOLDING NOTCH

HOLDING NOTCH

REPLACING THE TRIGGER-MECHANISM GROUP

SEAR PIN

SEAR PIN

RETAINING PIN

ATTACHING THE LEAF SPRING

JOINING THE BOLT TO THE OPERATING ROD

OPERATING-ROD YOKE

BOLT

BOLT

M60 Disassembly

OPERATING-ROD YOKE

2-10

REPLACING THE BOLT AND OPERATING-ROD GROUP

Insert the end of the operating rod into the receiver until the face of the bolt is approximately 5 cm (2 in) from the rear of the receiver. Hold the rod with one hand, and push forward on the rear of the bolt with the other hand, causing it to rotate until the locking lugs are in a vertical position.

With the cam roller up, push the operating rod and bolt into the receiver until

REPLACING THE BUFFER

ASSEMBLY

Insert the buffer piunger into the driving-spring guide. Push forward on the buffer until the recess on the buffer is alined with the recess in the receiver group. Replace the the end of the operating rod is even with the rear of the receiver.

Insert the driving-spring guide into the driving spring, then insert the free end of the driving spring into the opening of the operating rod. Pull the trigger and push forward on the cam roller, following the forward action of the operating rod with the driving spring.

REPLACING THE BOLT AND OPERATING-ROD GROUP

BOLT

BOLT

Operating Rod

OPERATING ROD

INSERTING THE BOLT AND OPERATING ROD INTO THE RECEIVER GROUP

OPERATING ROD

INSERTING THE BOLT AND OPERATING ROD INTO THE RECEIVER GROUP

CAM ROLLER

DRIVING-SPRING GUIDE

DRIVING-SPRING GUIDE

M60 Machine Gun Stock Latch

CAM ROLLER

M60 Machine Gun Receiver Markings
OPE RATI NG-ROO OPENING

INSERTING THE DRIVING SPRING

buffer yoke in the top of the receiver group, insure that the buffer is locked in place.

REPLACING THE STOCK

Aline the guide rails of the stock with the guide rails on the receiver group. Push

REPLACING THE STOCK

M60 Machine Gun Stock Latch
RECEIVER GROUP

REPLACING THE BUFFER YOKE

M60 Machine Gun Butt Stock Latch

forward until the stock is fullv seated. The m*

latch will make a distinct click when it engages.

CAUTION

EASE THE ®&tX FORWAJRO TO AVOID DAMAGE TO TH£ TRAY AUD feA&TS OP THE BOLT.

CONDUCTING A FUNCTION CHECK

A function check must be made to insure that the M60 is correctly assembled. Place the safety on FIRE. Pull the cocking handle to the rear, cocking the M60; CLOSE THE COVER; PLACE THE SAFETY ON SAFE AND PULL THE TRIGGER (should NOT fire); place the safety on FIRE and pull the trigger WHILE HOLDING the cocking handle to allow the bolt to EASE forward. Move safety to SAFE.

If the bolt does not go forward, the M60 must be disassembled and then reassembled. If the M60 fires with the safety on SAFE, the squad leader must be notified and the gun must be turned in to maintenance to get the safety repaired.

DETAILED DISASSEMBLY AND ASSEMBLY

Detailed disasembly at unit level is limited to the barrel group, trigger-mechanism group, receiver assembly, and bolt assembly.

DISASSEMBLY OF THE BARREL GROUP

To disassemble the barrel group, place the bipod legs in the down position.

Use the combination tool to unscrew and remove the gas-cylinder nut. Allow the gas piston to slide out the rear of the cylinder. In training, the gas-port plug and lock wire are disassembled by the operator only under supervision. Unscrew and remove the gas-cylinder extension. This completes the disassembly of the barrel group.

NOTE: The gas cylinder components are disassembled only when the piston does not move freely as the barrel is tilted end-for-end. Disassembly of the gas system must be supervised by the unit armorer or organizational maintenance personnel because only they are authorized to wire the assembled parts.

BARREL GROUP

GAS CYLINDER

GAS PORT PLUG

GAS CYLINDER

GAS PORT PLUG

GAS CYLINDER NUT

COMBINATION TOOL

GAS PISTON

LOCK WIRE

GAS CYLINDER EXTENSION

GAS CYLINDER NUT

GAS PISTON

LOCK WIRE

GAS CYLINDER EXTENSION

COMBINATION TOOL

2 12

DISASSEMBLING THE BARREL GROUP

GAS CYLINDER

GAS CYLINDER

Cylinder Washer Machine

KEY WASHER

GAS CYLINDER NUT

GAS CYLINDER PLUG

REMOVE

KEY WASHER

REMOVING THE NUT AND WASHER

GAS CYLINDER NUT

REMOVE

Firearm Gas Piston Plug

GAS CYLINDER PLUG

©CORROSION STEEL WIRE {SAFETY WIRE)

REMOVING THE WIRE PLUG

Safety Wire Washers

WASHER WIRE PLUG BARREL

WASHER WIRE PLUG BARREL

BOTTOM THE REAMER TO INSURE THAT ALL CARBON HAS BEEN REMOVED ^ he*

CLEANING THE GAS PLUG

CLEANING THE GAS SYSTEM

2-13

DISASSEMBLY OF THE TRIGGER-MECHANISM GROUP

To disassemble the trigger-mechanism group:

Depress the sear and remove the retaining pin by pulling it to the left.

Remove the sear from the top of the trigger-mechanism group.

Remove the sear plunger and sear-plunger spring.

Remove the trigger pin by pulling it to the right.

Remove the trigger through the top of the grip.

DISASSEMBLING THE TRIGGER-MECHANISM GROUP

Machine Gun Trigger Mechanism

TRIGGER PIN

TRIGGER PIN

SEAR PLUNGER

REMOVING THE TRIGGER PIN

SEAR PLUNGER SPRING

M60 Receiver

SEAR PLUNGER

S-L.JL9

SEAR PLUNGER SPRING

S-L.JL9

REMOVING THE SEAR PLUNGER

SEAR PIN

Top M60 Grip

SEAR PIN

REMOVING THE SEAR RETAINING PIN

REMOVE THE TRIGGER THROUGH THE TOP OF THE GRIP.

REMOVING THE SEAR PLUNGER

REMOVE THE TRIGGER THROUGH THE TOP OF THE GRIP.

Open Bolt Sear And Trigger Mechanisms
REMOVING THE TRIGGER

DISASSEMBLY OF THE RECEIVER GROUP (COCKING HANDLE)

To disassemble the receiver group (cocking handle):

Unscrew and remove the cocking-handie-guide screw and lock washer.

Remove the cocking-handle guide by rotating it downward and away from the receiver.

Pull the cocking handle to the rear and remove it from the guide slot.

REMOVING THE COCKING HANDLE-GUIDE

SCREW AND LOCK WASHER

M60 Machine Gun Disassembly

COCKING-HANDLE-GUIDE

COCKING-HANDLE-GUIDE SCREW AND LOCK WASHER

COCKING-HANDLE-GUIDE

COCKING-HANDLE-GUIDE SCREW AND LOCK WASHER

DISASSEMBLY OF THE BOLT

Rotate the cam-roller assembly on the bolt until the holes are alined with the bolt-plug pin at the rear of the bolt. Using the pointed object, remove the bolt-plug pin. Remove the bolt plug by turning it counterclockwise.

Remove the cam roller assembly by pulling it from the rear of the bolt

Remove the spring, firing-pin bearing, and firing pin from the bolt body.

REMOVING THE BOLT-PLUG PIN

Machine Gun Disassembled View

BOLT PLUG

BOLT-PLUG PIN

BOLT PLUG

BOLT-PLUG PIN

NOTE: No further disassembly of the bolt by the machinegun crew is authorized.

DISASSEMBLED BOLT

BOLT BODY

FIRING PIN BEARING

CAM ROLLER ASSEMBLY

BOLT BODY

FIRING PIN BEARING

M60 Machine Gun Barrel Assembly

CAM ROLLER ASSEMBLY

Plug Pin Assembly Machine

FIRING PIN BOLT-PLUG FIRING PIN SPRING PIN

ASSEMBLY OF THE BARREL GROUP

To assemble the barrel, replace the gas-cylinder extension and tighten, using the combination tool.

Position the gas piston so that the gas escape holes are closed and are to the rear. Insert the gas piston into the gas cylinder (open end goes in first).

Insert the trigger (with the trigger spring to the rear) through the top of the trigger mechanism so that the spring is under the channel surface. Aline the hole in the trigger with holes in the trigger mechanism. Replace the trigger pin from the right. Replace the

Replace the gas-cylinder nut and tighten, using the combination tool.

NOTE: The safety wire must be installed by the unit armorer or organizational maintenance personnel.

sear-plunger spring and sear plunger in the well in the channel surface.

Position the sear with the shoulder up and to the rear. Press down on the sear and replace the sear pin from the left.

BARREL GROUP

GAS CYLINDER

BARREL GROUP

GAS CYLINDER

GAS PORT PLUG

M60 Disassembly

GAS CYLINDER NUT

LOCK WIRE

GAS CYLINDER EXTENSION

GAS PISTON

LOCK WIRE

GAS CYLINDER EXTENSION

GAS PORT PLUG

GAS PISTON

GAS CYLINDER NUT

COMBINATION TOOL

COMBINATION TOOL

ASSEMBLY OF THE TRIGGER-MECHANISM GROUP

ASSEMBLING OF THE TRIGGER MECHANISM GROUP

TRIGGER SPRING

CHANNELSURFACE

INSERTING THE TRIGGER

TRIGGER SPRING

M60 Machine Gun Maintenance

CHANNELSURFACE

INSERTING THE TRIGGER

SEAR PLUNGER SPRING

SEAR PLUNGER SPRING

SEAR PLUNGER
Machine Gun Disassembly
REPLACING THE SEAR PLUNGER

TRIGGER PIN

TRIGGER PIN

REPLACING THE TRIGGER PIN

SEAR

SEAR

Machine Gun Sear

SEAR PIN

REPLACING THE SEAR PIN

SEAR PIN

REPLACING THE SEAR PIN

ASSEMBLY OF THE COCKING-HANDLE

Position the cocking-handle in the square opening at the rear of the cocking-handie-guide slot and push it forward.

Position the cocking-handle-guide over the cocking-handle by inserting the bottom tabs in the slots in the receiver, then properly aline the screw holes and rotate it upward into position.

Replace the lock washer and screw.

REPLACING THE COCKING-HANDLE-GUIDE SCREW AND LOCK WASHER

M60 Bolt Locking

HANDLE GUIDE

COCKING-HANDLE-GUIDE SCREW AND LOCK WASHER

HANDLE GUIDE

COCKING-HANDLE-GUIDE SCREW AND LOCK WASHER

ASSEMBLY OF THE BOLT

Hold the bolt body in the palm of the hand, face down, and insert the striker end of the firing pin into the rear of the bolt body.

Insert the firing-pin bearing into the bolt body with the partially closed end first.

Position the firing-pin spring within the firing-pin bearing.

Place the cam-roller assembly over the rear of the bolt body with the cam roller toward the front of the bolt.

Screw the bolt plug finger-tight into the bolt body. Rotate the cam-roller assembly until the holes are alined with the holes in the bolt body. Insert the bolt-plug pin into the cam-roller assembly. The cam-roller assembly should rotate freely around the bolt.

ASSEMBLING THE BOLT

M60 Disassembly

HOLDING THE BOLT

HOLDING THE BOLT

M60 Machine Gun DisassemblyM60 Machine Gun Disassembly

INSERTING THE FIRING PIN

INSERTING THE FIRING PIN

M60 Bolt Firing Pin

POSITIONING THE FIRING-PIN SPRING

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Responses

  • Simone
    How do you safety wire the gas pieces of an M60?
    3 years ago

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