TM 5-3810-306-34
3. CLEAN REMAINING DEPOSITS FROM RING
4. MEASURE PISTON BORE.
GROOVES WITH SQUARE END OF A BROKEN
RING.
CAUTION
Do not use a ring groove cleaner.
Ensure sealing surface in piston
groove does not get scratched.
4. WASH PISTONS AGAIN IN DETERGENT
SOLUTION AND BLOW DRY WITH COMPRESSED
AIR.
Max. dia. = 1.7726 in. (45.025 mm)
INSPECTION:
5. MEASURE PISTON PIN.
1. INSPECT
PISTON,
PISTON
PIN
AND
CONNECTING ROD FOR DAMAGE AND
EXCESSIVE WEAR. CHECK PISTON TOP, RING
GROOVES, SKIRT AND PIN BORE.
2. MEASURE
PISTON
SKIRT
DIAMETER
AND
RECORD.
Min. dia. = 1.7712 in. (44.989 mm)
6. MEASURE CONNECTING ROD PIN BORE.
Diameter = 4.4794 in. (113.776 mm)
3. MEASURE RING TO GROOVE CLEARANCE.
a. Use a new piston ring inserted in appropriate
groove to measure clearance.
Top = Use keystone gauge
Intermediate = .006 in.
(.150 mm)
Oil control = .005 in. (.130 mm)
Max. dia. = 1.773 in. (45.035 mm)
4-36
