Manitowoc 16000 Service And Maintenance Manual

Reference Only
Manitowoc Published 05-09-17, Control # 014-28 5-7
16000 SERVICE/MAINTENANCE MANUAL HOISTS
5
Maintenance
Inspect and test the block-up limits weekly or every 40
hours of operation, as follows:
1. Lower the boom and jib onto blocking at ground level
and carefully inspect the following items:
a. Inspect each limit switch lever and actuating lever
for freedom of movement. Apply one-half shot of
grease to fitting on the actuating lever; wipe away
any excess grease.
b. Inspect each weight for freedom of movement on
the load line.
c. Inspect each weight, each chain, each shackle and
each connecting pin for excessive or abnormal
wear. Make sure cotter pins for shackles are
installed and spread.
d. Inspect entire length of each electric cable for
damage.
e. Check that electric cables are clear of all moving
parts on boom and jib and that cables are securely
fastened to boom and jib with nylon straps.
f. Check that all plugs are securely fastened.
2. Test block-up limits for proper operation using either of
the following methods:
a. BOOM LOWERED: Manually lift each weight —
one at a time — while engine is running. Load drum
should not operate in HOIST direction and boom/
mast hoist should not operate in LOWER direction.
b. BOOM RAISED: Slowly hoist each load block and
weight ball — one at a time — against weight.
When chain goes slack, corresponding load drum
should stop HOISTING and boom/mast hoist should
not operate in LOWER direction.
Adjustment
See Figure 5-5 for the following procedure.
Lower boom onto blocking at ground level and adjust each
limit switch as follows:
1. Adjust spring tension so there is enough force to lift
weight of chain and rotate actuating lever when weight is
lifted.
2. Loosen setscrew in limit switch lever so lever is free to
rotate.
3. Manually lift weight to allow actuating lever to rotate
upward.
4. Hold lever at Dimension A.
5. Hold roller on limit switch lever against actuating lever
while performing step 6.
6. Turn limit switch shaft COUNTERCLOCKWISE (for right
hand) or CLOCKWISE (for left hand) only enough to
“click” limit switch open and hold. Then securely
tighten setscrew in limit switch lever.
7. Test limit switch for proper operation (see Maintenance
topic); repeat adjustment steps until limit switch
operates properly.
CAUTION
Avoid Machinery Damage!
To prevent two-blocking from occurring, do not operate
crane until cause for improper operation and all
hazardous conditions have been found and corrected.
CAUTION
Avoid Sheave Damage!
Use extreme care when testing block-up limits when
boom is raised. If a block-up limit fails to stop load,
immediately stop load by moving drum control handle to
off; otherwise, two-blocking may occur.

Manitowoc 16000 Specifications

General

Brand	Manitowoc
Model	16000
Category	Construction Equipment
Language	English