w4aizuz1 SS 284 BL ZUZ1 LUD low dasn neat - VINA Solutions

DTNA Solutions > Service Solutions > < Thomas Built Bus
> SS 284 TBB 2021 DD5 low dash heat

SS 284 TBB 2021 DD5 low dash heat

This Service Solution does not imply any special warranty coverage. Standard
warranty guidelines and coverage applies. This Service Solution is provided to assist
Dealers/Customers in resolving the issue of Low heat in the dash or body heaters.

Applicable Vehicles
C2 with DDS Engine

Symptoms
Lack and or low heat in the drivers area

Issue

Unknown, as Detroit is looking into the matter. if you have this
concern you can add a Flow Restrictor 1 BB 66000566 in the
return line at the manifold tubing. Refer to diagram D22-75463,
page Z item 31

SRT .2

Below component and the VRMS code
VMRS Code for PN: TBB 66000366 FLOW RESTRICTOR - HEATER, 5/16 X 1.00"

174-026-029 _—_- FITTING - BUS BODY HEATER

Solution

w4aizuz1 ‘SS 284 6B ZUZ1 DUD low dasn neat - VINA Solutions

Shut the return line valve off, and the line connecting to the manifold pipe you can pinch the line
off with an smooth type clamp. Loosen the clamp, remove the hose, and insert the Restrictor.

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