STG global TANVAC HDV3000, Operator'S Manual

Page: 152 / 329

7
G. Crankcase Maintenance
1. Unscrew the four hex bolts and take the two
halves apart as shown in section 6.1-D.
There are internal springs pushing these
two sections apart. Place the pump in a
press, or something equivalent, to keep the
two halves from springing apart when the
bolts are removed.
(Fig. A)
2.
Once the crankcase is apart, the shaft and
bearings are exposed. The components fit
on top of each other in order according to
the parts breakdown manual.
(Fig. B)
3.
Remove thrust bearing, axial bearing by
hand.
4. Remove angled eccentric shaft by removing
6mm bolt with an allen wrench and lifting
off.
5. Remove the crankshaft using an industrial
press. Gently tap the end of the shaft until
shaft releases from the crankcase.
(Fig. C)
The bearing usually comes out with the
shaft. To remove the shaft from the
bearing, support both sides of bearing and
press or tap shaft out of the bearing.
6. Remove oil seal by working around the
edges with a small flat-headed screwdriver.
Lift out once completed. Replace the oil
seal once it is removed.
H. Crankcase Reassembly
1. Assemble shaft/bearing assembly. Stack
all of the shaft & bearing components.
Secure using the 6mm allen bolt & wrench.
Place LOCTITE 243 on the bolt before
threading. Torque to 18 ft. lbs.
(Fig. D)
2.
Insert large bearing into crankcase.
Lubricate and press into place.
3.
Insert lubricated shaft into bearing and
press into place.
(Fig. E)
4. Assemble the piston guide, spring, washer
& snap ring. Slide the piston assembly into
the piston holes as explained in 6.1-E.
5. Press the two halves of the crankcase
together compressing the springs. Secure
the 6mm bolts with an allen key. Torque to
18 ft. lbs.
(Fig. A)
I. Unloader Maintenance
1. To service the unloader, simply take a
22mm wrench and remove the cartridge
just above the manifold.
(Fig. F) Remove
this piece and replace it with new unloader
cartridge Comet part# 1215.0271.00
Fig. B Fig. C Fig. A
Fig. D
Fig. F
Fig. E