JETStream X Series - Page 100

92
Operation Manual
PROBLEM POSSIBLE CAUSE REMEDY
Insufcient water
lubrication
Needle valves not properly adjusted Adjust the needle valves
Air in the system Open the manifold drain with pump on
Plugged lines Remove debris from lubrication lines
Leakage from pump
manifold uni-valve
leakage holes
Damaged valve seal Replace seals
Leakage from
discharge tting
leakage holes
Damaged ttings or seals Replace the ttings and/or seals
Pump oil leaking from
breather
Check oil level Add oill as necessary
Verify use of proper oil type See “Oil Specications” on page 62
Water in pump oil
Cross head oil seal leak Replace seal
Cold oil
Continue to run until oil temp
increases to adequate temperature
Engine will not return
to idle when control
gun dumping
Excessive hose back pressure Reduce hose string length
Throttle control piston sticking Repair throttle control unit
Engine will not
increase in speed
when control gun rst
closes
Engine idle speed too low Increase idle speed
Large gun nozzle Decrease nozzle size
Insufcient water
lubrication
Needle valves not properly adjusted Adjust the needle valves
Air in the system Open the manifold drain with pump on
Plugged lines Remove debris from lubrication lines
Poor packing life
Hot water 125°F max
Insufcient water ow Adjust water ow
Dirty water Clean/replace lter
Scored/pitted plunger Replace plunger
Gland nut loose Tighten nut