Possible Failures In Front Power Take-Off Shaft And Guidelines For Troubleshooting - Belarus 1822.3 Operator's Manual

Low oil pressure in transmission
hydraulic system
Low oil pressure at valve output
to PTO friction coupling due to
excessive internal leakage
Friction coupling operating trou-
ble due to piston deadlock or
wear and tear of frictional disks
When PTO brake is engaged the end extension is still rotating
Oil pressure loss at valve input
or at output leading to PTO
brake
Low oil pressure at output lead-
ing to PTO brake due to exces-
sive internal leakage
Brake operating trouble due to
piston deadlock or wear and
tear of frictional disks
Heavy bending load on shaft end exten-
sion from the implement coupled drive
(out-of-limit angles of cardan shaft and
etc.,)
Twisting of splines (teeth) of PTO shaft end extension
Shock stress generated by im-
plement coupled that is trans-
mitted to the PTO shaft end ex-
tension
Application of PTO shaft end type coordi-
nated by horsepower capacity with im-
plement coupled drive
7.7 Possible failures in front power take-off shaft and guidelines for trouble-
shooting
List of possible failures of front power take-off shaft and guidelines for troubleshoot-
ing are shown in Table 7.7.
Table 7.7
Failure, external manifestations,
cause
Front PTO shaft can not be engaged and its end extension does not rotate
When the FPTO is engaged in-
Adjust pressure reducing valve of transmission
hydraulic system or correct other troubles in the
transmission hydraulic system
Check pressure of oil running in PTO friction cou-
pling, replace friction coupling O-rings if neces-
sary
Rinse friction coupling components in pure die-
sel fuel, replace frictional disks if necessary
Check pressure at control valve input, in case there is
no pressure correct the trouble of transmission hydraulic
system. In case there is no pressure at valve output to
PTO brake replace the control valve
Check pressure of oil running in PTO brake, re-
place friction coupling O-rings if necessary
Rinse brake components in pure diesel fuel, re-
place frictional disks if necessary
Bent fracture of PTO shaft end extension
Eliminate break of coupling requirements. Cor-
rect troubles in the machine, replace PTO shaft
end extension
Check availability and operability of safety ele-
ments of the implement coupled (torque-limiting
clutch, shear bolt) and correct the trouble, re-
place PTO shaft end extension
Install PTO shaft end of horsepower capacity re-
quired by the implement drive (from the set sup-
plied with SPTA)
Comply with instructions of subsection 7.4 "Possi-
307
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Troubleshooting