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MAINTENANCE
Crusader
MC-8
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_ l 6_-22 _ _ _
DATE
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MANUAL
1. This Side For Standard Bearing
2. Pump Shoulder
3. Seal Shoulder
4.
This Side for Undersize Bearing
(Stamped "B ")
Fig. 16-30: Puller Shoulder
The piston pin lock rings should be placed with the
gap on the side as per Figure 16-28 and be tight
enough so that they cannot be rotated by finger
pressure.
The rings taken in order from the head of the
piston consist of two compression rings (plain), an oil
ring (vented) and a second oil ring on the piston
shirt. Insert each ring separately in the cylinder about
3/8" from the top and check the ring gap. It should be
between .007 and .017''.
Install the compression rings on the piston with the
side marked "T" or "Top" toward the head of the
piston. See Figure 16-29. Install the oil rings with
either side up. (They have no taper). Stagger the rings
gaps around the piston.
~r
BRONZE
BEARING
WASHER
~ P U M P END MAIN BEARING
PUMP END BEARING HOUSING
Fig. 16-31: Pump End Bearing Position
Check the rings for free action and measure the
side clearance between the ring and the piston with a
feeler gauge. It should be about .001.
ASSEMBLY
Install the sleeve, connecting rod and piston assem-
bly at the same time, making sure the piston does not
come out the top of the sleeve.
Turn the connecting rod and install the cap so the
chamfered sides are against the radius of the crank-
pin. The small knobs on the rod and cap must be on
the same side of the journal.
CRANKSHAFT
DISASSEMBLY
Remove the cylinder heads, valve plates, con-
necting rods, cylinder sleeves and pump end main
bearing head. Remove the crankshaft through the
pump end of the crankcase, tapping the_ seal end of
the shaft with a mallet and wooden dnft bar.
3
l . Seal Housing
2.
Housing Pi lot
3. Top Plate
4. Bearing
5. Puller Shoulder
6. Direction of Pul I
Fig. 16-32: Removing Bearing with Puller
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