93
Units with Straight Engine Shaft:
Two types of engine adapters have been produced - one
that uses an engine adapter gasket and socket head cap
screws, and one that uses an o-ring and button head
fasteners.
1. To assemble units having an engine adapter gasket, refer
to Figure 7.31:
a. Use a new adapter gasket and install the engine
adapter onto the engine.
b. Retain the engine adapter to the engine with four (4)
5/16”-24x 3/4” socket head cap screws and for (4) M8
ribbed lock washers.
c. Tighten the cap screws to the torque value specified in
the Torque Chart, found on Figure 7.2 (Exploded
View) at the beginning of this chapter.
When installing the engine adapter having the glued-
in sleeve, be sure to use the correct socket head cap
screws. Pump assemblies used on engines with
straight (non-tapered) shafts use 5/16”-24 x 3/4” long
cap screws. Pumps on engines with tapered shafts
use 5/16”-24 x 1” long cap screws.
2. To assemble units having an O-ring seal and button head
cap screws with o-ring seals, refer to Figure 7.32:
a. Use a new O-ring around the housing pilot and install
the engine adapter onto the engine.
b. Retain the engine adapter to the engine with four (4)
5/16”-24x 3/4” button head cap screws and four (4)
o-rings.
c.
Tighten the cap screws to the torque value
specified in the Torque Chart, found on Figure 7.2
(Exploded View) at the beginning of this chapter.
Section 7 • Large Frame Pump
Portable Pressure Washer Familiarization and Troubleshooting Guide
Figure 7.31 — Axial Cam Drive Components (Units with
Straight Engine Shaft)
Item
Name
1
Engine adapter gasket
2
Engine adapter
3
Engine adapter bearing assembly
4
C-ring cam retainer
5
Washer retainer
6
Thrust washer
7
Engine shaft adapter
8
Axial cam
9
Axial cam bearing assembly
10
Lock washer
11
Socket head cap screw
Figure 7.32 — Axial Cam Drive Components (Units with
Straight Engine Shaft and O-Ring Seal)
Item
Name
1
O-ring
2
Engine adapter
3
Engine adapter bearing assembly
4
C-ring cam retainer
5
Washer retainer
6
Thrust washer
7
Engine shaft adapter
8
Axial cam
9
Axial cam bearing assembly
10
Button head cap screw
11
O-ring