Exhaust System - Drones At Idle in Gear
NO: 11-03-95GROUP: Exhaust
DATE: Mar. 24, 1995
SUBJECT:
Exhaust Drone at Idle
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 11-02-94 REV. A DATED SEP. 30, 1994 WHICH SHOULD BE NOTED IN THE 1994 TECHNICAL SERVICE BULLETIN BOUND BOOK. 1995 MODEL YEAR VEHICLES BUILT PRIOR TO 12101194 (MDH 12-01-XX) HAVE BEEN ADDED. IN ADDITION, THE TORQUE VALUE IN REPAIR PROCEDURE STEP 7 HAS BEEN CHANGED. THE CHANGES ARE HIGHLIGHTED WITH ASTERISKS.
MODELS:
1994-**1995** (AB) Ram Van/Ram Wagon
SYMPTOM/CONDITION:
Drone and vibration is present at idle and in gear (D) when the engine is at operating temperature. Drone and vibration is not present when engine RPM is raised above idle RPM.
DIAGNOSIS:
With the engine idling at normal operating temperature, listen/feel for exhaust type drone/vibration. Vibration can be felt through brake pedal, steering column, seat and floor. The drone/vibration goes away off idle or when shift lever is placed into Park or Neutral.
PARTS REQUIRED:
1 4797312 Steady Rest Bracket & Clamp Kit
REPAIR PROCEDURE:
This bulletin involves the addition of a steady rest bracket to the exhaust strut on the transmission.
1. Raise vehicle on an appropriate hoist.
2. Loosen left engine to automatic transmission strut bolt. Loosen only enough to slide new steady rest bracket in place (see Figure 1).
3. Insert steady rest bracket as shown in Figure 1.
4. Torque strut bolt to 65 Nm (50 ft.lbs.).
5. Insert clamp saddle between steady rest bracket and Y-pipe (Figure 1).
6. Insert exhaust clamp U-bolt.
7. Torque exhaust clamp U-bolt to **23 Nm (17 ft.lbs.).**
POLICY: Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No: 11-20-20-92 0.2 Hrs.
FAILURE CODE: P8 - New Part