Hotsy Gas Belt Drive • 8.931-236.0 • REV. 7/13
OPERA
TOR’S MANU
AL
PRESSURE
W
ASHER
28
HD.1 SERIES PUmP ExPLODED VIEW
HD.1 SERIES PUmP ExPLODED VIEW PARTS LIST
TORqUE
SPECS
Item # Ft.-lbs
14
65
17
18
25
7.6
34
7
44
13
ITEm PART NO. DESCRIPTION
qTy
1
9.803-938.0 crankcase
1
2*
See Kits
Plunger Oil Seal
3
3*
See Kits
O-Ring Ø1.78 x 28.30
3
4*
See Kits
Pressure Ring 15mm (3030)
3
See Kits
Pressure Ring 18mm
(4020, 3025)
3
5*
See Kits
U-Seal, 15mm (3030)
3
See Kits
U-Seal, 18mm
(4020, 3025)
3
6*
See Kits
Intermediate Ring 15mm
(3030)
3
See Kits
Intermediate 18mm
(4020, 3025)
3
7*
See Kits
Intermed. Ring 15mm (3030)
3
See Kits
Intermed. Ring 18mm
(4020, 3025)
3
8
9.802-926.0 Brass Plug 1/2"
1
9
9.803-199.0 copper Washer 1/2"
1
10
9.803-946.0 Manifold Housing
1
ITEm PART NO. DESCRIPTION
qTy
11*
See Kits
O-Ring Ø1.78 x 15.54
6
12*
See Kits
Valve Assembly
6
13*
9.803-948.0 O-Ring Ø2.62 x 18.77
6
14
9.803-949.0 Valve Plug
6
15
9.803-950.0 copper Washer 1/4
1
16
9.803-951.0 Brass Plug G1/4
1
17
9.803-952.0 Manifold Stud Bolt
8
18
9.802-884.0 Washer
8
19
9.803-198.0 copper Washer 3/8
1
20
9.802-925.0 Brass Plug 3/8
2
25
9.802-939.0 Screw
12
26
9.803-953.0 Bearing cover
2
27
9.803-954.0 Bearing Seal
1
28
9.802-914.0 Snap Ring
1
29
9.803-955.0 Ball Bearing
2
30
9.803-956.0 crankshaft
1
31
9.803-167.0 crankshaft Key
1
32
9.803-957.0 Oil dipstick
1
8.725-168.0 HD3025R.1
8.904-730.0 HD3030R.1
8.916-561.0 HD4020R.1
