INSTRUCTIONS
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
INSTRUCTIONS
GM 3000r
AIRLESS PAINT SPRAYERS
Drive Housing Replacement Kit 238691
Pinion Housing Replacement Kit 238684
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 8.
Removal
1. Relieve pressure.
2. Remove the displacement pump. See page 7.
3. Remove the pressure control (25). See page 3.
4. Remove the three drive housing screws and lock
washers (15, 16). See Fig. 1 on page 2.
5. Remove the two pinion housing screws (69) and
lock washers (16). See Fig. 1 on page 2.
6. Tap the lower rear of the drive housing (6) with a
plastic mallet to loosen the drive housing. Pull the
drive housing straight off the pinion housing.
CAUTION
Do not allow the gear (19) to fall; it may stay at-
tached to the drive housing or to the pinion housing.
Do not lose the thrust balls (6a and 2d) or let them
fall between the gears, which will damage the drive
housing if not removed. If the balls are not in place,
the bearings will wear prematurely.
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
7. Remove and inspect the crankshaft (8) and the
Installation
8. Lubricate the inside of the drive housing bronze
9. Install the connecting rod.
10. Place the large washer (5) and then the small
11. Insert the crankshaft into the bearing in the drive
12. If replacing the complete drive housing assembly
13. Install gear (19).
14. Install new gasket (64).
15. Work backwards from step 5 to reassemble.
ECOPYRIGHT 1996, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001
connecting rod (10).
bearing with SAE non-detergent oil.
washer (3) on the crankshaft (8).
housing (6) and connecting rod (10).
(6), brush bearing grease (supplied) on all gear
teeth. Then recoat the gear teeth with bearing
grease (supplied). Pack the remaining bearing
grease into the bottom part of the drive housing.
Use 3/4 tube of the grease. See Fig. 2.
308660
Rev. B
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