3500 4x4 Pickup L6-359 5.9L DSL Turbo (1996)
Technical Service Bulletin # 720R
Date: 970601
Recall - Vacuum Check Valve
No. 720
May, 1997
Revised June, 1997
To: All Dodge Truck Dealers
Subject:
Safety Recall # 720 -- Vacuum Check Valve
Models:
1995 and 1996 Model Year Dodge Ram (BR) Trucks Equipped With a 5.9L Diesel Engine ("C" in the 8th VIN Position) Built From July 10, 1995
(MDH 071014) Through July 1, 1996 (MDH 070114)
The power brake booster vacuum hose on the above listed vehicles, may deteriorate due to oil contamination from the vacuum pump. If this occurs, the
vacuum supply to the power brake booster may be restricted and could cause a loss of power assist during repeated quick brake applications. In addition,
the oil contamination may cause other vacuum operated components to malfunction, such as the speed control servo, the heater/air conditioning vacuum
controls and the 4X4 front axle and transfer case vacuum controls. To prevent this condition, a check valve must be installed on the engine vacuum pump
and the brake booster vacuum hose must be replaced.
IMPORTANT:
Some of the involved vehicles may be in dealer new vehicle inventory. Federal law requires you to complete this recall service on these vehicles
before retail delivery. Dealers should also consider this requirement to apply to used vehicle inventory. and should perform this recall on vehicles in
for service as determined by using DIAL System Function 70.
Details of this service action are explained in the following sections.
Service Procedure Videotape
No videotape of the service procedure for this recall will be provided.
Dealer Notification & Vehicle List
Involved dealers:
Each dealer to whom involved vehicles were invoiced (or the current dealer at the same street address) will receive a copy of this dealer recall
notification letter and a list of the involved vehicles by first class mail.
The Vehicle List is arranged in Vehicle Identification Number (VIN) sequence. Owners known to Chrysler are also listed. The lists are for dealer
reference in arranging for service of involved vehicles.
All other dealers:
All dealers will receive a copy of this dealer recall notification letter by first class mail.
DIAL System Functions 53, 70 and VIP
All involved vehicles will be entered to DIAL System Functions 53, 70 and VIP at the time of recall implementation for dealer inquiry as needed.
Parts
Important:
A quantity of parts will be distributed initially and billed to all involved dealers. This quantity will cover a portion of the total vehicles involved.
Additional parts may be ordered as needed to support customer demand.
Each involved dealer, to whom vehicles in the recall were invoiced (or the current dealer at the same street address), will receive enough Check Valve
Packages, PN 4883793AA, to service about 50% of those vehicles.
Each parts package contains the following components:
Quantity
Description
1
Check Valve
