HALE AP, Technical Manual

Page: 151 / 177

139
Add pusher tube and continue pressing bearing until seated against 5.
gearbox housing snap ring.
E. Install pump shaft snap ring. See Figure 47.
Compress a new pump side bearing snap ring. 1.
a) Using snap ring pliers, expand pump shaft snap ring. Do NOT release pliers until
instructed. (NOTE: Refer to paragraph 5.7.5 for proper ring orientation.)
b) Push pump shaft snap ring over end of pump shaft and locate directly over groove
in shaft.
Release snap ring pliers and verify ring seats in groove. 2.
F. Perform Installation portion of Pump Shaft Endcap (ONLY) procedure. See
paragraph 5.9.2.2.2 (on page 139).
Return to the calling bench procedure or paragraph 5.9.2, Gearbox Bench Procedures (on
page 120), for gearbox to pump (unit) assembly and unit installation in apparatus instructions
references.
5.9.2.2.1
Pump Shaft Bearings (ONLY)
ALWAYS INSTALL NEW BEARINGS WHEN INSTALLING THE PUMP GEAR OR PUMP
SHAFT (ESPECIALLY IF METAL WAS FOUND IN THE GEAR OIL). FAILURE TO INSTALL
NEW BEARINGS MAY RESULT IN PREMATURE PUMP FAILURE OR ADDITIONAL
EQUIPMENT DAMAGE.
The pump shaft utilizes two (2) double row angular contact roller ball bearings; one located on
the drive side and the other located on the pump side of the pump shaft. Both of these bearings
are one-piece bearings pressed onto the pump shaft and installed in the gearbox housing. Using
goo d practices; whenever a shaft bearing requires replacing ALL bearings on that shaft should be
replaced at the same time.
Since both bearings are an interference fit to the pump shaft, it is impossible to R&R ONLY the
bearings. Therefore, perform the pump shaft bench procedure (see paragraph 5.9.2.2 on
page 131) and reuse the existing pump shaft.
5.9.2.2.2
Pump Shaft Endcap (ONLY)
Removing the pump shaft endcap may NOT require pump and gearbox removal depending on
gearbox access when installed in the apparatus. If the endcap is accessible without pump and
gearbox removal, perform the steps listed below. Otherwise, prior to performing the steps listed
below, remove the pump and gearbox, as a single assembly, for access purposes see para-
graph 5.8.2.1 (on page 56) for reference to the required Removal From The Apparatus proce-
dure. Refer to Table 46 for a list of tools and/or consumables required for this procedure.
Table 46. Pump Shaft Endcap R&R Tools And Consumables List
Standard Tools Special Tools Consumables
PPE (Eye and Hand Protection) None Shop Rag(s) (As Required)
PPE (for Handling Oil) Loctite Clean-Up Solvent™ (or equivalent)
Ratchet Loctite 680™ (Or Equivalent)