GMC GMT 610, Manual

Page: 21 / 80

G/H Van (GMT 610) 2005
G/H V
AN
(
GMT 610
)
17
P
AGE
(Section 12 — continued from previous page)
Battery Installation
The battery and cable installation, provided by the body upfitter, must comply with the following guidelines. Non-compliance may result in a
failure of the vehicle electrical component system, the shutdown of the engine or the possibility of fire.
1. The cables must not contact any sharp edge(s), in either the normal (stored) or slid (maintenance) position (school bus
application).
2. The cables must not be bent in a radius of smaller than 10 times the cable diameter. Insulation failure can occur if this happens.
3. The cable must be supported by clips spaced at a distance of not more than 250 mm. In this clipping, they shall not have a free
movement that will allow rubbing on any vehicle component, either fixed or moveable.
4. All clips used must be of the rubber-lined type, not rubber dipped.
5. Do not splice the battery cables. Cable modifications can result in vehicle starting problems and loss of other key systems.
6. The cables must be clipped to the battery tray such that the cable pull loads are not transferred into the battery posts due to slide
tray movement. Failure to do so can result in loose terminals, poor starting or battery failure. Battery acid leakage could result
around posts not properly relieved of strain.
7. The cable attachments at the battery terminal must not cause undue strain at these connections. There should be no sharp bends
in the cables adjacent to the connections. The cables should be routed down from the terminals rather than horizontally from the
terminals to prevent a lever action that may loosen connections. Terminal corrosion inhibitors and other coatings should not be
applied to the sealed electrical contact areas. Terminal torque of the sealed terminal shall be 10/20 N•m freedom, 14/20 N•m
linehaul.
8. Mounting Base (Tray) – The tray should be of a substantial material sufficiently reinforced to resist flexing and cracking. The tray
must provide firm, continuous support of the battery and not amplify vibration levels. There must be no protrusions or projections
in the tray or mountings that would damage the battery. Cantilevered mountings are not recommended and the tray should be
mounted flat so as not to aggravate electrolyte spillage or lead fatigue. A rounded lip of adequate height to ensure stiffness and
retention should be provided around the perimeter of the tray. With the battery mounted in a vehicle, a static force of 22 kg applied
to a 6.54 sq. cm. area at any corner should not move the battery any more than .25 mm.
Battery trays are supplied with the chassis. In the case of motor homes and diesel school buses, the trays are secured to the frame
rail. The trays shipped on the rails may be relocated to other areas on the vehicle, keeping in mind the recommendations noted
above.
For other units, the tray is supplied on the radiator support.
(Section 12 — continued on next page)