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PennEngineering • www.pemnet.com
Instruction Manual - RIV 938S
©2011 Rev. 911
FAULT DIAGNOSIS
REF. PART NUMBER
DESCRIPTION
1
4380800
Guide bushing to insert Ø 9 lip seal, located at the
bottom of the seat of the pressure switch (ref. C)
2
4381200
Ø 9 lip seal (ref. C)
3
—
Ø 8 commercial punches
Items 1 and 2 are special order (please refer to Rivit part numbers).
PROBLEM
No traction
After installing rivet nut, tool does not
unscrew properly
SOLUTION
Tool needs oil.
Not enough oil in tool. Check O-ring (B) and replace if
necessary.
When you have to work on the pressure switch:
1. Remove air
2. Loosen the oil cap (27) carefully keeping gasket (C) from coming out. If
replacing, use guide (1). If after reassembling all parts of the pressure switch
and tool does not work properly, O-rings (O1, O2, O3) have not been correctly
assembled:
O-ring (O2) when broken unscrews without making traction
O-ring (O3) makes traction but no unscrew
O-ring (O1) can leak air
Consequently, it is advisable to replace all 3 O-rings (ORM 15x1) of the kit (ref.
41) part number 4157200.
