Landoll L20 Series, Руководство оператора

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DANGER
WHEN CRAWLING UNDER THE
TRAILER IS NECESSARY, CHOCK ALL
WHEELS OF THE TRAILER AND
TRUCK. WHEN JACKING IS NECES-
SARY, CHOCK ALL WHEELS AND
SUPPORT THE TRAILER FRAME WITH
JACK STANDS SUFFICIENT TO WITH-
STAND THE WEIGHT OF THE TRAILER
AND LOAD. FAILURE TO TAKE ADE-
QUATE SAFETY MEASURES CAN RE-
SULT IN SERIOUS PERSONAL INJURY
OR DEATH.
DANGER
THE SPRING BRAKE CHAMBER EM-
PLOYS A SPRING WITH HIGH FORCES.
SERVICE SHOULD NOT BE AT-
TEMPTED. SERIOUS INJURY OR
DEATH MAY RESULT.
a. Caging the Power Spring
1. Chock the trailer wheels.
2. Remove dust cap from spring brake
chamber.
3. Remove the release bolt from it’s
holding brackets and insert it into the
spring brake chamber. DO NOT USE
AN IMPACT WRENCH TO CAGE
THE SPRING BRAKE!
4. Turn the bolt until the spring brake is
caged. This should be 2-1/4 to 2-1/2
inches of release bolt extension.
5. The brakes should now be released.
Do not operate loaded trailer with
brake manually released.
6. To reset the spring brake, turn the
release bolt until the spring is released.
Remove the release bolt and store it in
its brackets.
7. Snap the dust cap back in place on the
chamber.
b. Removal
1. Chock all truck and trailer wheels and
drain the air system.
2. Mark the brake chamber for proper air
line port alignment for reassembly.
3. CAGE THE POWER SPRING
following the steps outlined in Section
4-6.2 a.
4. Disconnect the slack adjuster from the
connecting rod by removing the clevis
pin (See Figure 4-4) .
5. Mark all air service lines for proper
re-installation and disconnect from the
brake chamber.
6. Remove the brake chamber from the
axle brackets.
c. Installation
1. CAGE THE POWER SPRING
following the steps outlined in Section
4-6.2 a.
2. Position the inlet ports by loosening the
service chamber clamp bands and
rotating the center housing so the ports
align with marks made during
disassembly. Then re-tighten the
clamp bands.
3. Position the breather hole in the
downward facing position by loosening
the clamp bands on the spring brake
chamber and rotating the chamber
housing until the breather hole faces
downward. Re-tighten the clamp
bands.
4. Remount the brake chamber on the
axle brackets and reconnect the air
service hoses and the slack adjuster
connecting rod (See Figure 4-4) .
IMPORTANT
BE SURE THE SERVICE LINE IS ON THE SERV-
ICE CHAMBER PORT AND THE EMERGENCY
LINE IS ON THE SPRING BRAKE PORT.
d. Check for leakage by charging the air sys-
tem to a minimum of 90 psi and apply soap
suds to the brake chamber and connections.
If a growing bubble is detected or bubbles are
blown away, locate the source of the leak and
repair.
e. Insure that the clamp band is properly
seated and tight before uncaging the power
spring.
4-4