76
d)
CONNECTING RODS (Fig. 17)
Different types of conrods are fitted to the different
engines. Some characteristics are common.
All conrods have match marks which must always be
assembled together and when fitted onto the engine the
marks must face outwards (towards the PTO).
Fig. 17
A.
Vertical shaft conrod
B.
Horizontal shaft conrod
X.
Match marks
a.
Oil passage
C.
Oil dipper
D.
Nuts
Conrods for engines with horizontal crankshaft have an
oil dipper (C) and a lubricating hole (a).
Con Rod caps may be retained by one of the following
methods:
- Lock Nut - (D-Fig 17)
- Bolt and Lock Tab - (Fig 18)
- Locking Bolt - (Fig 19)
Always renew lock nuts, lock tabs and locking bolts when
removed. It is not recommended to re-use them.
- Lock tabs should be bent up securely around the bolt
heads.
- If con-rod bearing surfaces are worn or scored, the
complete con-rod must be replaced. Undersize bearings
are not availble.
Fig. 17
Fig. 18
Fig. 19
Fig. 20
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