NOTE - continued
With the front (vertical side) of the cam housing facing the operator and with the handle
facing toward the right (single handle models), the position index marks and engraved cavity
numbers appear on the right side of the cams.
The valve cavities are numbered 1 and 2 from the left with the cam housing in the same
position as above.
e.
Remove screw (20), washer (21), and nameplate (22). Remove the knob (23), handle (24) and plug (25) from
hub (26). Remove hub (26) and washer (27) from the shaft (28).
f.
Remove the shaft (28) with ring (29) and washer (30). This will drop the cams (31), and arbors (32) out of the
housing (33).
4-3.2.2
Cleaning, Inspection and Repair.
a.
Clean all metal parts of the valve assembly with a non-flammable solvent. Wash all rubber parts with soap and
water.
b.
It is recommended that the cam housing be cleaned as an assembled unit. Clean in mineral spirits or in any
solvent that is not harmful to Nylatron GS plastic.
c.
Rinse parts thoroughly and blow dry with a low pressure air jet.
d.
Inspect all parts and replace those which are worn or damaged.
4-3.2.3
Assembly. During assembly lubricate all metal-to-metal surfaces and bronze bushings in cam housing with no.
107 Lubriplate. Lubricate all rubber parts with Dow Corning no. 55 Pneumatic Grease.
NOTE
Replacement cams (31) are not marked for index position and cavity number. If any cam is to
be replaced, the replacement cam must be marked identically to the cam it replaces.
a.
Assemble hub (26), plug (25), handle (24) and knob (23). Insert shaft (28) into hub (26) and install nameplate
(22), washer (21) and screw (20). Install washer (27) on shaft.
b.
Insert the assembled shaft into housing (33) slightly. Position cams (31) so that the engraved cavity numbers
and index marks face toward the handle (24). It is imperative that the position index marks appear in a line at
bottom center when the handle is in the upright position.
c.
Place cam (31) marked no. 2 on shaft next to handle, then install arbor (32), and cam (31) marked no. 1.
4-27
