6
The Leak Test
The purpose of a leak test is to make sure the unit is airtight. To
perform a leak test use the leak test fixture from the table below. If
the tool is not available, the gearbox must be sealed to perform the
test. This can be accomplished by assembling the sealed input
device onto the gearbox at the input end and replace one of the oil
plugs with an air chuck. DO NOT EXCEED 10 PSI PRESSURE
DURING THE LEAK TEST. Higher pressure will create a false
sealing effect in assemblies with lip-seals.
The unit has a leak if the
pressure gauge reading on your leak check fitting starts to fall after
the gearbox has been pressurized and allowed to equalize. Leaks
will most likely occur at the pipe plugs, the main seal or wherever
o-rings or gaskets are located. The exact location of a leak can
usually be detected by brushing a soap and water solution around
the main seal and where the o-rings or gaskets meet on the exterior
of the unit and then checking for air bubbles. If a leak is detected in
a seal, o-ring, gasket, the part must be replaced and the unit
rechecked. Leak test at 10 psi for 20 minutes.
Model code
Leak Test Tool
S12Ax44xx
T220225
S12Ax55xx
T173814
Summary of Contents for S12 Series
Page 1: ...1 Torque Hub Planetary Final Drive S16A1 2 Series Service Manual Rev 9 3 13 ...
Page 10: ...10 DISASSEMBLY ...
Page 22: ...22 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 23: ...23 ASSEMBLY ...
Page 36: ...36 Planetary Final Drive Service Manual Assembly Drawing ...
Page 40: ...40 T158149 LOADING PLUG AND BASE ...
Page 41: ...41 T160764 BEARING CUP ASSEMBLY PRESSING TOOL ...
Page 42: ...42 T223131 LOCKNUT WRENCH ...
Page 43: ...43 T119240 LOCKNUT WRENCH ...
Page 44: ...44 T154563 ASSEMBLY PRESSING TOOL ...
Page 45: ...45 T139345 ASSEMBLY PRESSING TOOL ...
Page 46: ...46 T137786 TOOL TO PRESS IN SEAL ...
Page 47: ...47 T158049 BEARING CONE PRESSING TOOL ...
Page 48: ...48 T136184 TOOL TO PRESS BEARING ON SHAFT ...
Page 49: ...49 T159173 PRESSING TOOL TO INSTALL BEARING CONE ...
Page 50: ...50 T173814 LEAK TEST FIXTURE ...
Page 51: ...51 T220225 LEAK TEST TOOL ...
Page 52: ...52 T224477 ROLL TEST TOOL ...
Page 53: ...53 T223989 ROLL TEST TOOL ...
Page 54: ...54 T158149 LOADING PLUG AND BASE FOR ASSEMBLY ...