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PT / PG / PD REPAIR PD SERIES PUMPS 5<br />
5.20 Gearcase (cont.)<br />
Recommended tools:<br />
Socket wrench - 7/16"<br />
Pry bar<br />
Allen wrench - 1/4"<br />
Removal:<br />
1. Remove engine from pump housing. See Section<br />
5.19 Engine.<br />
2. Remove connecting rod cover (1).<br />
3. With stop switch against spark plug, pull starter until<br />
crank arm (2) is in its uppermost position.<br />
4. Loosen screw (3) mounting crank arm (2) to gear<br />
shaft (4). Pry crank arm off gear shaft.<br />
5. Remove four screws (5) and lock washers (6) mounting<br />
gearbox (7) to pump housing.<br />
6. Lift gearbox from pump housing.<br />
7. Remove nine screws (8), two screws (9), and lock<br />
washers (10) mounting gearbox cover (11) to gearbox<br />
(7).<br />
CAUTION: When separating the cover from gearbox,<br />
be careful not to damage gasket (12).<br />
8. Remove four screws (13) and lock washer (14)<br />
mounting engine adapter (15) to gearbox cover (11).<br />
9. Remove retaining ring (16) and pull pinion gear (17)<br />
from gearbox cover.<br />
10. Pull gear (18) and shaft (4) from gearbox (7).<br />
11. Pull internal gear (19) and pinion gear (20) from<br />
gearbox (7).<br />
Installation:<br />
1. Inspect all gaskets, seals, and bearings between<br />
pump components and replace if necessary.<br />
2. Press pinion gear (20) and internal gear (19) into<br />
gearbox (7).<br />
3. Align keys on shaft (21) with slots in gearbox and gear<br />
(18) and press into gearbox.<br />
4. Align pinion gear (17) and press into gearbox cover<br />
(11). Install retaining ring (16).<br />
5. Mount engine adapter (15) to gearbox cover using<br />
four screws (13) and lock washers (14). Torque<br />
screws to 10–11 ft.lbs. (14–15 Nm).<br />
6. Mount gearbox cover (11) to gearbox (7) using nine<br />
screws (8) and lock washers (10). Torque screws to<br />
7–8 ft.lbs. (9.5–11 Nm).<br />
7. Mount lifting bracket (22) to gearbox cover (11) using<br />
two screws (9) and lock washers (10).<br />
8. Mount gearbox assembly to pump housing using four<br />
screws (5) and lock washers (6). Torque screws to<br />
55–60 ft.lbs. (75–81 Nm).<br />
9. Mount crank arm (2) to gear shaft (4). Secure with<br />
screw (3) and torque to 55–60 ft. lbs. (75–81 Nm).<br />
10. Install engine to gearbox and pump housing. See<br />
Section 5.19 Engine.<br />
11. Mount connecting rod cover (1).<br />
5-19
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