Manitowoc 999 Service And Maintenance Manual

Reference Only
UNDER CARRIAGE 999 SERVICE/MAINTENANCE MANUAL
8-2
Published 05-16-17, Control # 233-03
CRAWLER
Maintenance
Crawler wear cannot be eliminated, but the rate of wear can
be reduced through regular preventive maintenance, as
follows:
• Lubricate crawlers as instructed in Lubrication in Section
9.
• Keep crawlers clean and avoid dirt build-up in crawler
frame.
• Keep all mounting bolts tight.
• Keep treads properly adjusted.
• Inspect crawler gear cases, crawler frames, rollers,
treads, and drive shafts on a regular basis.
Look for oil leaks, excessive wear, cracks, and other
damage. Broken or cracked parts can indicate that the
treads are adjusted too tight.
Repair or replace damaged parts immediately to prevent
further damage.
Tread Slack Adjustment
Checking Tread Adjustment
Check tread slack at the tumbler end of each crawler.
Maintain equal tread slack at both crawlers.
Y
Y
View Y-Y View Z-Z
A1185
FIGURE 8-1
14
13
17
10
24
16
20
12
22
18
23
15
19
11
21
13
11
19
15
18
14
12
20
16
17
23
22
24
21
Front
5
6
4
8
1
9
3
7
2
2
7
3
9
5
1
8
4
10
6
Carbody
Z
Z
Rotating Bed
Carbody
Carbody
Outer
Ring
Inner
Ring
Outer
Ring
Inner
Ring
A
B
B
Numbers Indicate
Tightening Sequence
A - Dowel Pin (2 places)
B - Grade 8 Bolt:
1-1/2 6 UNC x 8 inch Long
with SAE Flat Washers
• 48 places Outer Ring
• 48 places Inner Ring
Access Inner Ring Bolts
Through Center of Rotating
Bed and Holes in Carbody.
Access Outer Ring Bolts
From Outside Rotating Bed.
Rotating Bed

Manitowoc 999 Specifications

General

Brand	Manitowoc
Model	999
Category	Construction Equipment
Language	English