12
3
CHECKING PISTON PIN AND
CONNECTING ROD
1. Check piston pin, Fig. 6.
a.
Replace
if less than
.6718” (17.06 mm)
or
.0005”
(.01 mm)
out of round.
Fig. 6
−
Check Piston Pin
2. Check connecting rod bearings.
Note:
If crankpin bearing is scored or worn the connecting
rod must be replaced.
Connecting Rod Reject Size
Crankpin Bearing
Piston Pin Bearing
1.5015” (38.13 mm)
.6745” (17.13 mm)
Note:
.020” undersize connecting rods are available for
use on a reground crankpin journal. See illus-
trated parts list.
Fig. 7
−
Check Rod Bearings
CRANKPIN BEARING
PISTON PIN BEARING
ASSEMBLE PISTON AND
CONNECTING ROD
Lubricate parts with engine oil and assemble #1 piston and
connecting rod, Fig. 8.
1. Arrow on piston must face flywheel side.
2. Number ‘‘1” on connecting rod must face PTO side (op-
posite arrow on piston).
a. Install piston pin locks with needle nose pliers.
Fig. 8
−
Assemble #1 Rod And Piston
#1
ARROW TOWARD
FLYWHEEL SIDE
Lubricate parts with engine oil and assemble #2 piston and
connecting rod, Fig. 9.
1. Arrow on piston must face flywheel side.
2. Number ‘‘2” on connecting rod must face PTO side (op-
posite arrow on piston).
a. Install piston pin locks with needle nose pliers.
ARROW TOWARD
FLYWHEEL SIDE
Fig. 9
−
Assemble #2 Rod And Piston
#2
TSM
Summary of Contents for 405777 Series
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