Thomas SAF-T-LINER C2, Руководство по обслуживанию

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ancillary bay of the battery pack. The desiccant color
window will change from blue to pink when moisture
is absorbed. See
Fig. 5 for an example of the ancil-
lary bay desiccant plug.
1. Park the vehicle on a level surface, shut down
the engine, and set the parking brake. Chock the
rear tires.
2. Ensure that the battery pack manual service dis-
connect is removed. See
Fig. 6 .
3. Inspect each ancillary bay desiccant plug. If the
color window of the plugs are all blue replace-
ment is not required. If the color window is pink,
proceed with the steps below to replace the
plug(s) as needed.
4. Using a 1-3/8 inch socket wrench, remove the
old ancillary bay desiccant plug and discard it.
5. Remove the new desiccant plug from the
moisture-proof package and inspect it to ensure
the O-ring is correctly installed to prevent leak-
age. See
Fig. 7 . Install the new desiccant plug
into the ancillary bay and tighten it by hand. See
Fig. 8 and Fig. 9 .
6. Using a calibrated torque wrench and a 1-3/8
inch socket, tighten the desiccant plug 35 lbf·in
(395 N·cm).
7. Install the battery pack manual service discon-
nect removed earlier. See
Fig. 6 .
8. Remove the chocks from the tires.
54–04 Battery Pack Desiccant
Replacement, Electric
Vehicle
Battery pack desiccant replacement should be per-
formed every 12 months. This procedure describes
the steps to replace the battery pack desiccant in the
battery packs of the electric school bus. The battery
pack desiccant may be replaced based on time in
service or an indication that moisture has entered the
pack. The salt plugs for the desiccant area have a
built-in indicator for moisture contamination.
Figure
10 shows normal and contaminated plugs. If a plug
has been exposed to moisture, it will be necessary to
override spring tension when inserting an Allen
wrench for removal. If a battery pack desiccant has
internal leakage, indicated by the salt plug, this
should be diagnosed and repaired before replacing
the desiccant.
f547222 06/01/2020
The blue desiccant color window indicates that the des-
iccant plug does not require replacement. The color win-
dow turns pink when moisture is absorbed, indicating
that the desiccant plug requires replacement.
Fig. 5, Ancillary Bay Desiccant Plug
f547243 06/08/2020
1
1. Battery Pack Manual Service Disconnect
Fig. 6, Battery Pack Manual Service Disconnect
Electrical, Instruments, and Controls
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