PS S7.1 7110
001 OE35
Version no T-code
F-code Section C-code
Mast, 3 Stage
278
Service Manual 1996-10-15
2.4. Assembly
1. Thoroughly clean all parts and air dry
2. Install mast roller bearings on both the
intermediate and outer columns.
3. Assemble intermediate column in the outer column
and slide columns together.
4. Determine the number of shims required by prying
the inner column to one side and slipping shims
between bearing and web on the mast. Add shims
by hand until no more can be added.
5. Divide shims as equally as possible between the
two bearings and install under bearings.
6. Extend intermediate column through outer column
as far as it will go under normal operation. Check
bearing shimming as column is extended. Remove
shims as required, if tight spots are encountered
where assembler cannot roll mast by hand.
Check for excessive clearance with columns in the
fully closed position by prying column to one side
and checking with a 0.030 in. shim. Maximum
clearance must not exceed 0.030 in.
Check for excessive bearing clearance with
columns in the fully extended position by prying
column to one side and checking with a 0.030 in.
shim. Maximum clearance must not exceed 0.030
in.
7. Assemble inner column in the intermediate column
and slide columns together.
Be extremely careful when working with
solvent. Even a small explosion or fire
could cause injury or death.
WARNING
Compressed air used for cleaning
MUST
be reduced to less than 30 p.s.i., and then
only with effective chip-guarding and
personal protective equipment.
WARNING
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