M/T - Shift Rod Clatter at Idle, Coast or 2500-3500 RPM
87porsche02Subject: Shift Rod Clatter at Idle, Coast or 2500-3500 RPM
Model
911 Carrera
Group
3
Part Identifier 3417
Number
8704
July 31, 1987
ATTENTION: This bulletin replaces Bulletin Group 3, Number 8704, dated June 16, 1987.
To reduce shift rod clatter noise at idle, while coasting, or at 2500-3500 RPM, the shift linkage received a rubber ring (1 in picture), insulating hose (2 in picture), and a softer rubber washer (4 in picture).
From Production Date: August 28, 1986
VIN: 910HS120200 91-HS125061 914HS160121 918HS170165
To convert 1987 model cars prior to the above vehicle identification numbers, the following parts are required:
1) 999 701 969 40 1 Rubber ring
2) 999 615 047 40 1 Insulating hose
3) 999 513 002 40 1 Wire strap
4) 950 424 227 00 1 Rubber washer
5) 900 120 046 02 2 Rivets
950 424 224 03 1 Bushing
(arrow in picture 2)
Alternative for rivets:
900 075 134 02 2 Bolts M8x32
N 011 525 13 2 Washer
999 084 019 02 2 Nuts
1 - Rubber ring 2 - Insulating hose 700 mm 3 - Wire strap/insulating hose 4 - Rubber washer 5 - Rivet or bolt connection M 8 (torque: 23 N-m) 6 - Round casting mould bumps A - Shift B - Mount C - Shift base D - Distance adjusted: 5 mm
Additionally the shift rod bushing (arrow in picture 2) inside diameter was reduced to 17.9 mm (was 18.2 mm)
From Production Date: February 4, 1987
VIN: 91 HS 12 1787 91 HS 12 5061 91 HS 16 1318 91 HS 17 1733
New Part Number: 950 424 224 03
This bushing can also be service installed. On cars built after August 28, 1986 but before February 4, 1987, it may only be necessary to replace this bushing.
If only replacing bushing, omit work sequence step 11 through 17.
Work Sequence:
1) Lift car on hoist.
2) Lift shift diagram cap off shift lever knob carefully using knife, screwdriver or similar tool.
3) Unscrew shift lever knob allen screw (don't turn the knob, pull it off).
4) Dismantle the center console, guide over shift lever and lay aside (electrical equipment remains connected).
5) Unscrew tunnel cover in front of rear seat.
6) Disconnect the shift rod on rear mount (B in picture 1).
7) Unscrew and remove mount with rubber washer.
8) Unscrew front shift rod bolt. Remove shift base (C in picture 1) with shift lever (A in picture 1).
9) Clean the shift rod in shift base area.
10) Replace shift rod bushing (arrow in picture 2).
11) Slide insulating hose (2 in picture 1) as far as possible on the shift rod from the front.
12) Secure the insulating hose with wire strap (3 in picture 1).
13) Drill out rivets on rubber washer using 8 mm drill bit.
14) Mount new rubber washer on rear mount (4 in picture 1) with rivets (5 in picture 1).
Alternative: M8 bolts instead of rivets. Torque 23 N-m (17 ft. lbs.)
15) File down round casting mold bumps left and right on shift base (6 in picture 1).
16) Clean the shift base and shift lever in area of the rubber ring.
17) Install rubber ring (1 in picture 1).
18) Reinstall parts in the following order:
Mount shift rod in shift base. Torque bolts to 23 N-m (17 ft. lbs.). Install shift base, do not torque bolts at this time.
19) Slide the rear mount on the transmission shift rod. Torque bolts to 23 N-m (17 ft. lbs.).
20) Connect the shift rod rubber washer. Torque bolts to 14 N-m (10 ft. lbs.).
21) Engage 4th gear. Adjust distance between shift base bushing and shift lever to 5 mm by moving the shift base (D in picture 1). Torque shift base bolts to 23 N-m (17 ft. lbs.).
22) Reinstall tunnel cover, center console and shift lever knob.
Conversion Time Units: 180
Note:
Shift rod linkage and bushing must be lubricated with grease (Optimally HT or similar) in sliding areas.