1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013
27
MAINTENANCE
T
RUCK
:
The truck requires visual inspection of hardware, lubrication and operations during routine maintenance.
With the breaker outside the cell, verify all visible hardware tightness, including handles (9) and wheels (7). Wheels
should rotate freely by hand movement. Replace or tighten any missing or loose hardware.
With the breaker outside the cell, rotate the racking screw as though racking the breaker to the connect position. This
process will expose surfaces inside the truck that need to be inspected and lubricated. Lubricate the exposed parts;
specifically the entire Racking Screw (2) and Position Release Shaft (3) assemblies during the operation. Inspect
breaker locking tabs (8) and Secondary Locking Tab (1) for any damage. Return truck to disconnect position. As a
precaution, do not operate the breaker outside the cell unless the truck is in the full disconnect position.
Figure 3: (Truck shown with breaker removed)
1
Secondary Locking Tab
2
Racking Screw
3
Position Release Shaft
4 Grounding
connection
5
Racking Pin Monitor / Close
blocking switch
6
Position Release Lever
7 Wheels
8
Cell Locking Tabs
9 Insertion/Removal
Handles
10
Racking Screw Collar
11
Racking Lock for tagout
12 Spring
Charged
Interlock
13 Racking
pin
14
Breaker open Interlocks
1
2
3
4
5
6
7
7
7
7
8
8
9
9
10
13
11
11