Pistons And Connecting Rods Repair; Remove And Disassemble; Clean; Inspect And Repair - Yale GDP16-20AF Maintenance Manual

Pistons and Connecting Rods Repair

8. Install oil strainer. Tighten M6 capscrews to 8 to
12 N•m (6 to 9 lbf ft). Tighten M8 capscrews to 16
to 23 N•m (12 to 17 lbf ft).
9. Install gasket and oil pan. Tighten capscrews to 7
to 12 N•m (5 to 9 lbf ft).

REMOVE AND DISASSEMBLE

1. Remove cylinder head as described in Cylinder
Head, Camshaft, and Valve Mechanism Repair.
2. Remove oil pan and oil strainer.
3. Put identification mark on top of each piston.
4. Clean carbon from top of each cylinder bore.
5. Remove caps and bearings from each connecting
rod. Keep caps and bearings with correct piston
assemblies.
6. Push connecting rod and piston from cylinder block.
7. Carefully remove piston rings from pistons. Use
tool to push piston pin from connecting rod.

CLEAN

WARNING
Cleaning solvents can be flammable and toxic and
can cause skin irritation. When using cleaning sol-
vents, always follow solvent manufacturer's recom-
mended safety procedures.
Clean all parts in solvent. Make sure all oil passages
and grooves are clean. Make sure all machined sur-
faces are smooth.
12
Pistons and Connecting Rods Repair
1. REAR COVER
2. OIL SEAL
Figure 29. Rear Cover

INSPECT AND REPAIR

Pistons

1. Inspect pistons for wear and cracks. Replace any
piston that is damaged.
2. Measure outside diameter of piston. See Figure 30.
Correct dimension is 85.944 to 85.964 mm (3.3836
to 3.3844 in.). Maximum clearance between piston
and cylinder bore is 0.15 mm (0.0059 in.).
Figure 30. Piston Measurement

Piston Rings

1. Install piston ring into cylinder bore where it will be
used. Use thickness gauge to measure amount of
600 YRM 496
3. CRANKSHAFT