Valtra N82h, Service Manual

Page: 41 / 51

Model Code Page
13. Repair
131.1 1
1.8.2005
N91c---N111c
N91h---N141h
N121LS, N141LS
39
General instructions for repairs
Outer oil seals
The Service Manual contains instructions for changing all outer oil seals, (e.g. oil seals on the PTO shaft end, on the output
shaft to the front wheel drive and on the pinion shaft on the powered front axle, and so on).
TSealing compound and glue
If sealing compounds or glue are required for the repair work, the instructions will specify a sealing compound or glue which
is readily available through specialist dealers. Some seals should be greased before fitting and the space between the lips of
the seal should be filled with universal grease. If the seal is to be pushed over splines or sharp edges the seal should be pro-
tected with for example a thin plastic foil.
Tightening torques and setting values
All necessary tightening torques and setting values for each repair operation are given at the beginning of each repair section
under the heading Technical Data. The most important values can also be found in the repair instructions.
Table (on page
131.2)
gives the tightening torques in order of dimension, quality and surface treatment. The values given in
the table should be used if the tightening torque is not given in the repair instructions.
Safety
Always bear safety in mind when repairing or servicing the tractor. Use tools and lifting devices in the correct way . When you
are removing tractor components or splitting the tractor, every tractor part must be supported in such a way, that no risk of
accident exists. Avoid working under the supported tractor part if it is not absolutely necessary. When supporting the tractor
the centre of gravity of the frame part must always be checked. For instance the wedges must always be fitted between front
axle and engine to prevent axle oscillation when splitting the front frame of the tractor.
Trouble---shooting
The following procedure, combined with the information contained in the workshop manual will be helpful in tracing faults
accurately. It consists of following a number of logical steps to locate and correct the problem.
a) Determine the problem
b) List possible causes
c) Differentiate the causes
d) Conduct checks in logical order to determine the exact
cause
e) Consider approximate remaining service life against cost
of parts and labour.
f) Make any necessary repairs.
g) Recheck the parts and functions for correct operation