pronovost P-982TRC-150 Operator And Parts Manual page 15

MAINTENANCE ON SPEED REDUCER
It is extremely important that the chain inside the
chain box is tightened. A loose chain will add shocks
to the entire box (chain, sprockets, bearings and spline
couplings to gearbox).
Instructions for speed reducer (with chains) main-
tenance
This chain box has double functions.
1) Reduce angles at both ends of PTO in working
position by increasing the input shaft height of 8".
2) Increase PTO capacity by increasing speed from
540 RPM to 1000 RPM.
ADJUSTMENT OF THE CHAIN'S TENSION
After 10 working hours, the chain's adjustment must
be checked. In order to do so, verify the backlash
between the input and the output shaft by turning the
input shaft in both directions while the output shaft
remains still. If there is a play of 10° or more, the
chain must then be readjusted as follows:
1) Remove PTO from the chain box.
2) Unscrew the 12 bolts 5/16" dia. (item #22)
from covers (items #7 and #15) around the
input shaft on both sides of the chain box (6
bolts on each side).
NOTE: Input shaft covers are eccentric with
outside of covers. Therefore by turning input
shaft cover, center to center distance of shafts
will be changed and thus, this will adjust the
chain's tension.
3) With a hammer and a screw-driver or a chisel,
gently turn both covers in the same direction
until the next hole of the cover is in line with
the threaded hole of the chain box.
IMPORTANT: Make sure that the covers
are turned in the same direction and by the
same number of holes.
Otherwise, both shafts will not be parallel
and serious damages might arise.
4) Verify the backlash between both shafts, as
described above. If the difference is too high,
repeat the operation explained in point 3. If
the backlash is correct, reinstall the bolts and
the PTO.
5) Verify the backlash every 100 working hours.
MAINTENANCE ON SPEED REDUCER
1) Check oil level in speed reducer once a month.
Adjust to required oil level as per drawing in
Parts List section. Use SAE 80W90 oil.
2) Drain the oil of the speed reducer once a year.
Adjust to required oil level as per drawing in Parts
List section. Use SAE 80W90 oil.
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