Operation 7-3 To Check And To Adjust The Protrusion Of The Cylinder Liners - Perkins 2800 Workshop Manual

7
To check and to adjust the protrusion of the cylinder liners
Special requirements
Description
Clamp bolt
Clamp washer
Note: Cylinder liner protrusion is measured from the top of the cylinder liner to the top of the spacer plate.
1 Ensure that the top face of the cylinder block (A4) is clean. Fit a new spacer plate gasket and fit a clean
spacer plate (A3).
2 Fit the cylinder liners to the cylinder block without seals or bands. Ensure that the cylinder liners are fitted
to their original positions.
3 Install all of the bolts (A6), GE50005, or the six bolts around the liner (A5) to be checked. A plain washer
(A1), GE50006, and a fabric washer (A2), GE50007, must be fitted to each bolt. Tighten the bolts to a torque
of 95 Nm (70 lbf ft).
4 Use the special tool, GE50002, to measure the liner protrusion at the four positions shown (B1, B2, B3 and
B4) and record the measurements for each cylinder.
5 Add the four readings for each cylinder and divide the sum of the readings by four to obtain the average
reading for each cylinder.
The correct specifications for cylinder liner protrusion are:
Liner protrusion: 0,025 to 0,152 mm (0.001 to 0.006 in)
Maximum variation in each liner: 0,051 mm (0.0020 in)
Maximum average variation between adjacent liners: 0,051 mm (0.0020 in)
Maximum variation between all liners: 0,102 mm (0.0040 in)
Note: If the liner protrusion changes around the liner, turn the liner to a new position within the bore. If the liner
protrusion is not within the specifications, move the liner to a different bore. Inspect the top face of the cylinder
block.
84
Special tools
Part number
GE50005 Fibre washer
GE50006 Cylinder liner projection tool
Operation 7-3
Description
Workshop Manual, TSD3450E, Issue 1
2800
Part number
GE50007
GE50002
Continued