- 2 -
point.
5. Use full steady pump strokes when operating pump assembly during replenishing. Stop pumping oil
when can is empty or air bubbles are detected in sight gage. Reprime gun when changing cans.
6. When finished, disconnect the hose end coupling from the aircraft service point. Replace the dust
plug and store the gun in a dry dust free location.
7. When gun is stored, it is advisable to keep oil can latched to the gun to prevent contamination and oil
mess.
SERVICING:
The frequency of filter change depends on operating conditions. Generally, changes should be made
every 3-4 months or sooner if more than normal resistance is felt on the pumping stroke at low pressure.
Refer to figure 1A, item 43 to change filter element.
REPAIR AND REPLACEMENT:
No definite time schedule can be established for the overhaul of the O-C fluid gun dispenser assembly for
the replacement of the various moving parts. The number of times the pump assembly is operated
materially affects the life of the working parts. The moving piston seals (figure 1A, item 20) and piercer
rod seals (figure 1A, item 22) are normally the first to wear. This is usually indicated by leakage of fluid
past the piston rod (figure 1A, item 2) or the piercer rod (figure 1A, item 12). It is advisable to change
piston seals (figure 1A, item 20) and piercer rod seals (figure 1A, item 22) immediately if leakage is
discovered. Regardless of apparent condition, replace all parts marked with (
♦
). A repair parts kit (P/N
150-6HPK) which contains all of the parts marked with (
♦
) is available and recommended to keep on
hand at your facility. Coat all o-rings with petroleum jelly prior to assembly. Clean all metal parts with
solvent and dry with compressed air. Lubricate all threads. Refer to sheet 6 for the complete list of parts
contained in the repair parts kit.
