Drive Housing, Connecting Rod, Crankshaft - Graco A Series Instructions-Parts List Manual

Drive Housing, Connecting Rod, Crankshaft

WARNING
INJECTION HAZARD
To reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the Pressure Relief
Procedure on page 9.
NOTE: Inspect parts as they are removed. Replace
parts that are worn or damaged.
1. Remove the displacement pump. See page 22.
2. Remove the pressure control (64). See page 30.
3. Remove the three drive housing screws and
lockwashers (19,6).
4. Remove the two motor screws and lockwashers
(5,6).
CAUTION
Do not allow the gear (16) to fall; it may stay
attached to the drive housing or to the motor.
Do not lose the thrust balls (11a or 4a) or allow
them to fall between the gears, which will seriously
damage the drive housing if not removed. The
balls, which are heavily covered with grease,
usually stay in the gear recesses, but could be
dislodged. If the balls are not in place, the bearings
will wear prematurely.
5. Tap the lower rear of the drive housing (11) with a
plastic mallet to loosen the motor. Pull the drive
housing straight off the motor.
6. Remove and inspect the crankshaft (12) and the
connecting rod (15).
7. Install the connecting rod.
NOTE: The gears and bearings between the drive
housing (11) and motor front end bell (C) should con-
tain a total of 90 ml of grease.
8. Lubricate the inside of the drive housing bearing
with SAE 10 non-detergent oil. Pack the roller
bearing and gears with the grease supplied.
9. Place the large washer (12a) and then the small
washer (12b) on the crankshaft (12).
10. Lift the crank to the top of the stroke and insert the
crankshaft (12). Align the drive housing and motor
with the locating pins. Push the drive housing onto
the motor. Install the screws (5,19) and lo-
ckwashers (6) and tighten evenly to 9 N.m.
11. Install the pressure control (64). See page 30.
12. Install the displacement pump. See page 22.
13. Install the front cover (13).