Perkins 900 Series Workshop Manual page 77

900 Series
To fit
Special requirements
Description
Piston ring compressor
Cautions:
l If a new piston is fitted, ensure that it is of the same height grade as the original.
l Ensure that the bolts for the connecting rod do not damage the crank pin when the connecting rod is
removed or fitted. If necessary, fit a temporary plastic sleeve to the big end bolts.
l Ensure that the piston and connecting rod assembly is fitted to the same cylinder bore from which it was
removed.
1 Ensure that the piston, the cylinder bore, the crank pin and the big end of the connecting rod are clean.
Lubricate the piston and the cylinder liner with clean engine lubricating oil.
2 Rotate the crankshaft until the relevant crank pin is at its highest position. Lubricate the crank pin with clean
engine lubricating oil.
3 Fit the upper half of the shell bearings to the connecting rod. Ensure that the location tag is fitted correctly
in its recess (C2). Lubricate the bearing with clean engine lubricating oil. Lubricate the threads of the two bolts
for the big end. Put the bolts into position in the connecting rod. Ensure that the flat side of the head of the bolts
are towards the connecting rod.
4 Put the piston ring gaps 120° apart. Lubricate the piston rings with clean engine lubricating oil. Fit the tool
(A1) to compress the piston rings.
5 The arrow or "FRONT" mark on the top of the piston must be towards the front of the engine. Fit the piston
and connecting rod assembly into the correct cylinder bore. In this position the combustion bowl (B1) in the top
of the piston will be towards the left side of the engine when seen from the rear.
1
A
Workshop Manual, TPD 1345E, issue 3
This document has been printed from SPI². Not for Resale
Special tools
Part number
21825491
B
C0112
4
Operation 4-5
1
C0044
Continued
67