USER MANUAL Tractor semitrailers PTL
50
Picture 23. Elements of the braking system. 1 -braky hydraulic cylinder; 2 - leveler; 3 - adjustment bolt; 4 - cam shaft; 5 -
lubrication point
ATTENTION!
When performing repair works of the hydraulic and pneumatic systems, make sure that the
system is not under pressure.
7.3.
Hydraulic system
It is necessary to ensure that lubricant in the hydraulic system of the tractor and in the hydraulic system
of the semi-trailer is of the same grade. It is prohibited to use lubricant of different grades.
The hydraulic system of the semi-trailer must be tight. Check tightness by activating for a short time the
body tipping hydraulic cylinder. If any leak of lubricant is found, tighten up the connections. If this does not
help, replace the hoses or connections with new ones. If an assembly is mechanically damaged, it must be
required with a new one. The connecting elements of the hydraulic system must be clean.
8.
TROUBLESHOOTING
Item No
Problem
Cause
Solution
1.
The brake drum heats up
Improperly adjusted brake
blocks
Adjust according to Section 7.2.2
2.
The wheel hub heats up
Do not apply too much power
when working on the ladder
Contaminated
bearing
lubricant
Adjust according to Section 7.1
Disassemble the hub, replace the
lubricant, and adjust as indicated
above
3.
Lubricant falls on the brake
blocks
Damaged,
worn-out
or
improperly installed hub seal
Disassemble the hub and properly
replace the seal. Remove lubricant
from the brake blocks and drum and
clean them with gasoline. Assemble
the hub and adjust as indicated
above
4.
Wheels brake not uniformly
Worn-out, contaminated or
improperly adjusted brake
blocks
Replace worn-out blocks, clean
contaminated ones, and adjust
according to Section 7.2.2
5.
Wheels brake weakly
Improperly adjusted brake
blocks and brake elements
Adjust according to Section 7.2.2
