Perkins 103-06, Workshop Manual

Page: 39 / 80

SECTION V
Reassembly
Precautions Before Assembling
A. Wash parts before assembling. (Especially, oil
gallery, bearings, pistons and cylinder bores
should be washed thoroughly.)
B. Apply new oil to sliding and rotating surfaces of
cylinder bores, pistons and bearings, etc.
C. Replace gasket, packing, etc. Use liquid gasket to
prevent oil leakage where necessary.
D. Never overtighten bolts and nuts used on
aluminium alloy: tighten to specified tightening
torques.
Relief Valve Assembly
A. Install an 0-ring on the relief valve assembly.
Relief valve tightening torque: 6.
0 to 7.Okgf.m (43 to 501bf/ft.)
Crankshaft and Bearing Holder Assembly
A. Install the bearing holders on the crankshaft.
Insert this in the bush at the front end of the
cylinder block.
B. Align the bolt hole at lower part of the cylinder
block with thread hole on the bearing holder, and
tighten with bolts. For flywheel end, use two
special bolts, hex. recess in its head.
Bearing holder tightening torque:
2.5 to 3.Okgf.m (18 to 221bf/ft) Perama M25/M30/
103-09/10, 2.0 to 2.5kgf.m (14 to 181bf/ft) 103-06.
103-06
Standard play Allowable limit
0.1-0.3mm (
.004-.012")
0.5mm
(.020")
PB08
3
Rear Oil Seal
A. This is a pressfit, retained by the back plate.
PB082
PB084
Back Plate
C. Measure crankshaft end float.
A. Coat the area around the M10 threaded holes
with liquid packing solvent based sealant and
fix the back plate with bolts.
103-09/10/Perama M25/M30
Standard play Allowable limit Back plate tightening torque:
4.7 to 5.5kgf.m (34 to 401bf/ft) 103-09/10/
0.05-0.3mm 0.5mm
(.002-.012") (.020") Perama M25/M30.
1.3 to 1.7kgf.m (9 to 121bf/ft) 103-06.