page 67
page 67
page 67
page 67
page 67
475 A CRL
800-00167
SERVO PUMP MAINTENANCE CONTINUED...
Arbor Press
Arbor Press
Arbor Press
Arbor Press
Arbor Press
Seal Pressing
Seal Pressing
Seal Pressing
Seal Pressing
Seal Pressing
Tool
Tool
Tool
Tool
Tool
Shaft
Shaft
Shaft
Shaft
Shaft
Seal
Seal
Seal
Seal
Seal
Shaft Seal
Shaft Seal
Shaft Seal
Shaft Seal
Shaft Seal
Drive Shaft
Drive Shaft
Drive Shaft
Drive Shaft
Drive Shaft
Installation
Installation
Installation
Installation
Installation
Sleeve
Sleeve
Sleeve
Sleeve
Sleeve
Bearing
Bearing
Bearing
Bearing
Bearing
Drive Gear
Drive Gear
Drive Gear
Drive Gear
Drive Gear
NOTE:
NOTE:
NOTE:
NOTE:
NOTE: Drive shaft
installation sleeve wall
thickness should be
approx. 0.010" (.25 mm).
Figure 1
Figure 1
Figure 1
Figure 1
Figure 1
Figure 2
Figure 2
Figure 2
Figure 2
Figure 2
Figure 3
Figure 3
Figure 3
Figure 3
Figure 3
3. Remove pressure loading seal and Nylatron from wear plate. This seal may be two-piece or one-piece design. In
either case, discard old seal or seals. All replacement seals are two-piece design and should be installed into groove.
The seal should extend a minimum of .0005" (.127 mm) beyond surface of wear plate. Do not push seals below wear
plate surface at any point.
4. Inspect bushings in body and cover. Replace cover or body if bushing are heavily scored or burned.
5. Inspect gear journals and faces. Replace if faces or journals are scored or worn.
6. Inspect body for wear and scoring. If gear contact wear on low pressure side (inlet) exceeds .005" (.127 mm) depth,
replace body. If body is usable, lightly remove wipe burr with suitable de-burring tool.
PUMP REASSEMBLY
PUMP REASSEMBLY
PUMP REASSEMBLY
PUMP REASSEMBLY
PUMP REASSEMBLY
NOTE:
NOTE:
NOTE:
NOTE:
NOTE: The installation of new parts contained in seal kit are recommended at each overhaul of pump.
1. Place body on flat plate with shaft seal bore up. See Figure 1. Install new shaft seal. Press seal into bore to depth
of approximately 1/16" (1.52 mm) with a seal pressing tool. Pack area between double lip of seal with Lubriplate or
equivalent grease.
1/16"
1/16"
1/16"
1/16"
1/16"
(1.52mm)
(1.52mm)
(1.52mm)
(1.52mm)
(1.52mm)
Mounting
Mounting
Mounting
Mounting
Mounting
Face
Face
Face
Face
Face
Installation
Installation
Installation
Installation
Installation
sleeve
sleeve
sleeve
sleeve
sleeve
slipped over
slipped over
slipped over
slipped over
slipped over
spline.
spline.
spline.
spline.
spline.
Shaft
Shaft
Shaft
Shaft
Shaft
Seal
Seal
Seal
Seal
Seal
2. Invert body so that gear bores are up. Install wear plate in bottom of bore, making sure that pressure loading seals
are positioned properly in seal grooves and installed against bottom of bore surface.
3. Lubricate bushings in body and face of wear plate with SAE 10 oil.
4. Apply Lubriplate or equivalent to outer surface of drive shaft installation sleeve. See Figure 3. Insert sleeve into
shaft seal from front of pump until sleeve contacts drive gear bushing. Install drive gear and driven gear with long
journal toward shaft seal of pump.
5. Lubricate rear gear faces and journals with SAE 10 oil and install thrust plate in its original position, bronze face
toward gears.
6. Apply a small amount of grease to rear cover seal and install into groove.
7. Lubricate rear cover bushings with SAE 10 oil and install rear cover matching scribe marks on cover and body.
8. Position pump with shaft end down, install rear cover.
9. Insert cap screws and washer; torque to 34 to 38 Ft. Lbs.