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Mechanical release of spring brake (caging) – SAF-HOLLAND XL-AM20006BM Brake and Service Chamber User Manual

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XL-AM20006BM-en-US · 2014-04-22 · Amendments and Errors Reserved · © SAF-HOLLAND, Inc., SAF-HOLLAND, HOLLAND, SAF,
and logos are trademarks of SAF-HOLLAND S.A., SAF-HOLLAND GmbH, and SAF-HOLLAND, Inc.

4. Insert the release tool bolt through the release tool

access hole in the center of the spring housing and
into the pressure plate that is inside the spring
housing (Figure 16).

5. Once fully inserted, turn the release tool bolt

1/4 turn clockwise.

6. Pull the release tool bolt to ensure the bolt's cross-pin

ears are properly seated on the pressure plate.

7. Assemble the release tool washers and nut on the release

tool bolt to finger-tight.

8. Release the air pressure. The brake is now caged.

4.2 Optional Method

Failure to properly torque the release
tool nut could cause pressure plate,
washer and/or spring housing damaged
resulting in sudden release of the main
spring which, if not avoided could result
in death or serious injury.

IMPORTANT: These instructions apply only when the

spring brake is NOT pressurized.

1. Using a flashlight, look through the access hole for the

pressure plate (spring plate). It should be located 2.5-3"
(64-76 mm) from the access hole.

2. Insert the release tool bolt through the access hole, all

the way into the pressure plate that is inside the spring
housing (Figure 16).

3. Turn the release tool bolt 1/4 turn clockwise. Pull the

release bolt and make sure the bolt's cross pin ears sit
properly on the pressure plate (Figure 17).

4. Assemble the release tool washers and nut on the

release tool bolt to finger tight.

5. To cage the main spring mechanically, tighten the

release tool nut with a hand wrench, DO NOT use and
impact wrench. Ensure the service push rod is retracting
while tightening.

6. When the service push rod stops moving and/or the

UPSRVFSFBDIFTGUMCT /tN PSUIFSFMFBTFUPPM
extends beyond the nut more than 3.25" (82.5 mm),
stop torquing the release tool bolt assembly. The brake
is considered caged.

DO NOT over torque the release tool bolt
assembly. Failure to avoid over torquing
can cause pressure plate damage.

5PSRVFSFMFBTFUPPMCPMUUPGUMCT /tNNBYJNVN

Figure 16

RELEASE BOLT 1/4 TURN CLOCKWISE

RELEASE TOOL NUT

INSERT RELEASE BOLT

RELEASE TOOL WASHER

Figure 17

RELEASE BOLT 1/4 TURN CLOCKWISE

RELEASE TOOL NUT AND WASHER

Mechanical Release of Spring Brake (Caging)