2002 Buell S3T: Engine 3-39
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CLEANING AND INSPECTION
1. Clean all parts in cleaning solvent. Blow out holes and oil
passages with compressed air.
2. See Figure 3-53. Inspect both gerotor sets for wear.
a. Mesh pieces of each set together as shown.
b. Use a feeler gauge to determine clearance.
c. The SERVICE WEAR LIMIT between gerotors is
0.004 in. (0.102 mm). Replace gerotors as a set if
clearance exceeds this dimension.
d. Measure thickness of feed gerotors with a microme-
ter. Replace gerotors as a set if they are not the
same thickness.
3. Check gear shaft (11) teeth for damage or wear. Replace
if necessary.
ASSEMBLY/INSTALLATION
NOTE
Liberally coat all moving parts with clean engine oil to ensure
easy assembly and smooth operation at start-up.
1. See Figure 3-52. Install gear shaft (11) through body
(12). Position thrust washer (15) over end of shaft. Install
new
retaining ring (16) into groove in shaft.
2. Insert inner gerotor of the gerotor scavenge set (9) over
gear shaft.
3. Place outer gerotor over inner to complete scavenge
set (9).
4. See Figure 3-54. Position gerotor separator plate into
case and line up slots on perimeter with tabs inside oil
pump body.
5. Place gerotor feed set (7) over gear shaft (11).
6. Install a
new
O-ring (14) into groove in cover (6). Place
cover onto pump body. Install T27 TORX cover screws
(2) with washers (3). Tighten to 70-80
in-lbs
(7.9-9 Nm).
7. Place
new
mounting gasket (10) in position.
NOTE
Use
new
hose clamps. If fittings were removed, use
TEFLON
®
PIPE SEALANT or HYLOMAR
®
on fitting threads.
8. See Figure 3-51. Attach return hose connection (4).
9. Secure pump to crankcase with mounting screws (1) and
washers. Tighten to 125-150
in-lbs
(14.1-16.9 Nm).
10. Attach feed hose (3) and oil filter hose connection (5).
11. Attach clamp (6) and canister to hose.
12. Prime oil pump. Loosen feed hose connection and start
engine. Operate at idle and allow about 2.0 ounces
(0.06 liter) of engine oil to be forced through hose con-
nection. Stop engine and tighten hose connection.
13. Check engine oil level. Add oil to correct level if needed.
See 1.4 ENGINE LUBRICATION SYSTEM.
Figure 3-53. Gerotor Wear Limits
Figure 3-54. Separator Plate Slots
Inner Gerotor
b0097x3x
Outer Gerotor
Wear Limit
0.004 in.
(0.102 mm)
1
6620
2
3
1. Gerotor Separator Plate
2. Slot on Separator Plate
3. Tab on Oil Pump Body
4. O-Ring
4
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