Volvo Penta D1-13 - Con Rods; Crankshaft; Main and Big-End Bearings; Transmission

Crankshaft
The crankshaft (1) is supported by main bearings (2).
The thrust bearing is integrated in the rear main bear-
ing
cap
(3). The crankshaft is statically and dynamically
balanced, and has induction hardened bearing surfa-
ces. At the front end, where the gear wheel (4) for the
timing gear and the pulley (5) for the alternator and
coolant pump are located, the crankshaft has a groove
for a Woodruff key. At the rear of the crankshaft, there
is a flange (6) to which the flywheel is attached.
Main and big-end bearings
The main and big-end bearings (7) comprise steel
shells lined with bearing metal. The bearings are pre-
cision made and are ready to be installed.
Con rods
The connecting rods (8) are of I-section. The small end
is drilled for piston pin lubrication.
Pistons
The pistons (9) are made of light metal alloy. They
have three piston rings (10). Two piston rings are com-
pression rings and one is an oil ring.
Transmission
The timing gear comprises cylindrical gear wheels with
helical cogs and is located at the front of the cylinder
block. A timing gear cover (1) provides complete pro-
tection for the timing gear.
The camshaft (2) and raw water pump (3) are driven
by the crankshaft gear (4), via an idler wheel (5). The
engine lubrication pump is integral with the idler gear,
and is driven by it. The governor weights (6) are sus-
pended at the front of the camshaft drive and adjust
the injection pump via a mechanism in the timing gear
cover.
P0007834
10
9
2
6
3
4
5
7
1
8
P0007835
6
2
4
5
1
3
20-0 Engine Information, General
36 47701798 05-2013 © AB VOLVO PENTA