O Ring part# 3331
$3.78
Reservoir O-ring, EQ Systems part 3331
Sealing O-ring for reservoir 3329K, the reservoir kit fitted to the 3195KS hydraulic pump assembly used on multi function leveling and slide-out systems.
When to change it
Replace the O-ring any time the reservoir is removed from the pump housing, for example when draining the system after fluid contamination is found, or when the pickup tube is inspected. A reused or nicked O-ring is a common source of a weeping reservoir joint that looks like a pump leak.
The matching fill cap is part 3330. For the 3335K and 3333K reservoirs the O-ring is part 3334.
EQ Systems hydraulic systems run on Dexron III ATF. With the jacks fully retracted the fluid level should sit about one inch below the top of the reservoir. Remember the level rises as the jacks retract: a reservoir filled to the top with the jacks extended will push fluid out of the breather cap when they come back up.