Troubleshooting Guide - Haskel 10 P Series Technische- Und Leistungsdaten

10 HP Pump Series, 14" Series • MLP-14/46F
The air piston and air barrel should be re-lubricated on assembly with Haskel silicone grease P/N 50866.
Torque the four main tie rods evenly to 45 ft-lbs.
Hydraulic Section - Models -125 and -315
The hydraulic section can be dismantled for inspection by removing the four hydraulic barrel tie rod nuts,
pulling off the end cap check valve assembly together with the hydraulic barrel exposing the plunger and
hydraulic seal package. When re-assembling torque the hydraulic tie rods to 45 ft-lbs. The two end caps
each have 2 liquid bleed holes. The holes would vent any high pressure liquid in the event of leakage
around the outside of the 17035 seats.
Trouble Shooting Guide
Pump Will Not Cycle
Check to make sure air supply inlet is adequate and that the air exhausts and pilot vent are not plugged.
Check for blocked outlet line. Check that the air cycling valve spool moves freely in the sleeve and the 2
pilot valves are functioning correctly.
Pump Cycles Without Pumping
Check for air or excessive restriction in hydraulic inlet system. Check for suction leak if hydraulic supply
tank is remote or below pump. Inspect hydraulic inlet for blockage and hydraulic check valves for
contamination on valve seats.
External Leakage
Leakage between the hydraulic end cap and barrel would indicate that the end cap or end cap cone seal
is damaged.
There are three seals separating the high pressure fluid and drive air. Vents have been placed between
these seals so as not to contaminate either chamber. (See explanation, page 2 under Installation)
The hydraulic seal is a heavy duty, long life seal. When first starting to pump, a moderate amount of
leakage may occur. This will diminish quickly after a few minutes of pumping at an 80% load and will
continue to get better with usage.
Air Leakage
Tighten pipe or tube fittings which may loosen due to vibration during shipment or operation. Very slight
air leakage at drive stall is normal from the rod seal breather vents and main exhaust ports.
Excess Liquid in Drive Exhaust
Check for water and/or contamination in the air system. Clean and drain filter. If liquid in air exhaust is the
fluid being pumped, first make sure the vent holes are not obstructed. If the seals are worn and need
replacing, check the hydraulic fluid for abrasive contaminants. When ordering spare parts advise pump
serial number, model number and description. If water is the fluid being pumped, to inhibit slight corrosion
during extended non-operational periods, fill the hydraulic barrels with oil or oil mixture and plug the inlet
and outlet ports.
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