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Operating Instructions                                                               Form No. 1000090

PROBLEM

CAUSE

SOLUTION

Sheet No.

6 of 6

Rev 3

Date: 25 May 2012

Wrench will not retract.

1.

Check the system pressure; if
the pressure is zero, the control
valve is releasing pressure and
the problem may be in the
wrench, mechanical linkage
connected to wrench(s), or
quick-disconnect couplings.

2.

Defective valve.

3.

Inadequate air pressure (air
motor model only).

1.

Check the wrench for broken
return springs, and check
couplers to ensure that they are
completely coupled.
Occasionally couplers have to
be replaced because one check
does not stay open in the
coupled position.

2.

Check valve operation and
inspect parts. Replace if
necessary.

3.

Increase air pressure.

Pump delivers excess oil
pressure.

1.

Faulty pressure gauge.

2.

Relief valve not properly set.

1.

Calibrate gauge.

2.

Adjust the relief valve.

Pump will not build full pressure.
(Continued)

7.

Sheared key(s).

8.

Inadequate air pressure (air
motor only).

9.

Shifting spool seat and/or
shifting spool poppet (located
under high pressure pump
assembly) worn.

10. Shifting spool o-ring (located

within shifting spool bore) worn
or broken.

7.

Replace.

8.

Increase air pressure.

9.

Clean and reseat or replace.

10. With an o-ring pick, remove 

o-ring and backup washer
through low pressure pump
assembly end. Replace.

Содержание PE55TWP

Страница 1: ...d by improper operation or installation The hydraulic power unit can be ordered with building block flexibility The customer can choose from a variety of motors controls reservoirs and other options B...

Страница 2: ...ER SUPPLY Never use an ungrounded power supply with this unit The pump must be compatible with existing line voltage Disconnect the pump from the power supply when performing maintenance or repair on...

Страница 3: ...a clean funnel and filter Fill with hydraulic oil to 1 2 from the top of the filler hole Replace filler cap with the breather hole in the filler cap open 4 Cycle the pump with wrench attached several...

Страница 4: ...operation IMPORTANT After eliminating trapped air from a large work holding system retract the wrenchs and refill the pump reservoir to 1 2 from the top of the filler hole Adjusting The Pressure Regu...

Страница 5: ...mp to allow air to be released through the pump reservoir Hydraulic Fluid Level 1 Check the oil level in the reservoir after each 10 hours of use Proper oil level is 1 2 from the top of the fill hole...

Страница 6: ...il Place the pump and motor assembly with gasket on the reservoir and thread the ten screws Tighten securely and evenly Adding Oil To The Reservoir 1 Wrench must be fully retracted and the power suppl...

Страница 7: ...rm No 1000090 Sheet No 4 of 6 Rev 3 Date 25 May 2012 REASSEMBLY SPECIFICATIONS NEEDLE BEARING INSTALLATION SPECIFICATIONS HIGH PRESSURE PUMP ASSEMBLY BOLT TIGHTENING SEQUENCE BRUSH HOLDER ARMATURE INS...

Страница 8: ...before removing cover Any electrical work should be performed by a qualified electrician 1 Pump not turned ON 2 Unit is not plugged in 3 No voltage supply 4 Broken lead wire or defective power cord pl...

Страница 9: ...m top of filler hole with wrench retracted 2 Check quick disconnect couplings to wrench Inspect couplers to ensure that they are completely coupled Occasionally couplers have to be replaced because th...

Страница 10: ...ere are no visible leaks the high pressure pump subassembly may be leaking Remove all parts Check the valve head assembly body for any damage to the seat area Clean and reseat if necessary Inspect for...

Страница 11: ...replaced because one check does not stay open in the coupled position 2 Check valve operation and inspect parts Replace if necessary 3 Increase air pressure Pump delivers excess oil pressure 1 Faulty...

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