NATIONAL CRANE Published 03-23-2018 Control # 243-14 5-5
NBT50 OPERATOR MANUAL LUBRICATION PROCEDURE AND CHARTS
5
18
15
7
10a, 10b
14
8
13
FIGURE 5-1
19
6
5
11, 12
14
1
3
2
4
16
21
7462-18
7449-1
13
Lubrication Points
19
Item Application
Recommended
Lubricant
Procedure Frequency
1 Hydraulic oil tank reservoir HYDO Check, fill, change
Weekly, As Required, Semi-
Annually
2 Hydraulic tank Oil filter Change or clean
After first 40 Hrs, Quarterly
thereafter.
3 Hydraulic tank suction filter (inside tank) Change or clean
After first 40 Hrs, Quarterly
thereafter.
4 Breather, Hydraulic oil reservoir Clean Monthly
5
Sheave pins: boom (5 plcs), jib (1 pl),
block (1 pl), rooster sheave (1 pl)
EP-MPG Grease gun Weekly
6 Boom pivot pin EP-MPG Grease gun Monthly
7 Lift cylinder pins - 2 ea. EP-MPG Grease gun Monthly
8 Swing bearing EP-MPG Grease gun Weekly
10a Hoist gearbox. GL-5 Change/check & fill Every 1000 hours or 6 months
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