Frequently Asked Questions

Center Support to Case Snap Ring

One side of this snap ring is beveled and one side is flat (the intermediate clutch snap ring, by contrast, has both sides flat). Use only the beveled snap ring. Install it with its flat side toward the center support and its locating gap adjacent to the band anchor pin.

Intermediate Clutch Backing Plate to Case Snap Ring

Use only the flat snap ring. Install the snap ring with its locating gap opposite the band anchor pin.

This is a transcription of the original dealer bulletin for easier reading and search. The complete original scan is shown below.

Therefore, if service replacement is required for the pinion gears of a 1967 or 1968 Turbo Hydra-Matic transmission, it is necessary to press out one pinion pin and measure its outer diameter for size:

• If the size is .3928–.3930″, use replacement Pinion Kit, Grp. No. 4.175, Part No. 8623951.
• If the size is .4340–.4342″, use replacement Pinion Kit, Grp. No. 4.175, Part No. 8625913.

Note: When measuring the outer diameter of the pinion pin, measure near its end.

This is a transcription of the original dealer bulletin for easier reading and search. The complete original scan is shown below.

Revised procedure (replaces page 7F-27 of the 1968 Pontiac Service Manual):

1. Fully release the collet end of tool J 21371-2 by turning its brass nut clockwise.
2. Install the collet end of tool J 21371-2 into the converter hub until it bottoms, then tighten the brass nut to 5 lb. ft. (Fig. 1 in the scan below).
3. Install tool J 21371-3 and tighten the hex nut to 3 lb. ft. (Fig. 2).
4. Install Dial Indicator J 8001 and set it for zero while the plunger rests on the brass nut of tool J 21371-2.
5. Loosen the hex nut while holding the brass nut stationary, allowing the converter internal assembly to lower until the dial indicator shows that the internal assembly has bottomed (Fig. 3).
6. The reading obtained on the dial indicator represents converter end clearance. If clearance is under .050″, the converter is acceptable. If clearance is .050″ or over, replace the converter.

This is a transcription of the original dealer bulletin for easier reading and search. The complete original scan, including the figures, is shown below.

Review 1967 Dealer Service Information Bulletin 67-I-77, Section 7E, for the proper usage of strainer assemblies and transmission oil pans.

This is a transcription of the original dealer bulletin for easier reading and search. The complete original scan is shown below.

A new (Type 2) pump cover and a new (Type 3) pump body are now being used in production. This new cover and body can be identified by the casting numbers stamped on their faces (see Fig. 1 in the scan below). However, only the new (Type 3) pump body is being released for service, under service part number 8625954 [Z] (Gp. No. 4.224); the new (Type 2) pump cover will not be released for service.

Replacement rules:

• If the car is equipped with the new type pump cover and body and it becomes necessary to replace only the pump body, its service replacement must be the new (Type 3) service body, part number 8625954.
• If the car is equipped with the new type pump cover and body and it becomes necessary to replace only the pump cover, it may be replaced with the old style (Type 1) cover, part number 8624982 [Z] (Gp. No. 4.224).

Summary: The new (Type 2) pump cover can be used only on the new (Type 3) pump body (8625954), while the old style (Type 1) pump cover may be used with either type of pump body (Type 1 & 2 — 8624981, or Type 3 — 8625954).

This is a transcription of the original dealer bulletin for easier reading and search. The complete original scan, including the figures, is shown below.

The starting serial numbers of transmissions built with the new (type 2) pump cover and new (type 3) pump body referred to in Dealer Service Bulletin 68-I-49, Section 7E, dated 3/7/68, are as follows:

Starting Serial Numbers — New Type 2/3 Pump Cover and Body

Transmission Serial Number
PA-68-2957
PB-68-148057
PC-68-3093
PD-68-22689
PG-68-68210
PH-68-3213
PQ-68-1292
PT-68-2519
PX-68-22992
PY-68-4525

This is a transcription of the original dealer bulletin for easier reading and search. The complete original scan is shown below.

Refer to your 1968 Pontiac Service Manual, Section 7E, page 7E-30, item No. 2. The sentence currently reads:

“Check pump body face to gear face clearance, should be .0008″–.0015″ (Fig. 7E-74).”

Revise this sentence to read:

“Check pump body face to gear face clearance, should be .0008″ min.–.0035″ max. (Fig. 7E-74).”

This is a transcription of the original dealer bulletin for easier reading and search. The complete original scan is shown below.

When a transmission is overhauled for any major failure where clutch plate materials or excessive metal particles are found in the oil pan, the oil strainer assembly should be replaced.

Periodic maintenance should be observed for oil change and strainer replacement intervals, according to the type of vehicle operation.

This is a transcription of the original dealer bulletin for easier reading and search. The complete original scan is shown below.

Kent-Moore Organization
28635 Mound Road
Warren, Michigan 48092

This is a transcription of the original dealer bulletin for easier reading and search. The complete original scan is shown below, including the figures.

Switch Usage

Starter Neutralizer Switch Application Chart

Part No.	Year	Location	Model Usage	Transmission
1993380	1967–68	Column	Pontiac, Tempest, Firebird	AT & HT
9777866	1967	Console	Firebird (1st Type)	AT
9789717	1967	Console	Firebird (2nd Type)	AT & HT
9779665	1965–67	Console	Tempest	AT
9779665	1968	Console	Tempest*	AT
9779665	1965–68	Console	Pontiac	HT
1993422	1968	Console	Firebird	AT & HT
1993422	1968	Console	Tempest**	AT
1993422	1968	Console	Tempest	HT

Warehouse code “Z”, group number 2.698.

* Automatic transmission with wood insert console.
** Automatic transmission with padded console.

Column Mounted Neutralizer Switches (1993380)

Two neutralizer switches of the same part number were used in all 1967 production cars. The first type has a RESET slot on the rear face of the switch (Fig. 1 in the scan below); the second type has a RESET slot on the right side of the switch (Fig. 2) and was installed on late 1967 production cars and is installed on all 1968 production cars.

Adjust the first type switch as follows:

1. Insert the blade of “RESET” gauge (J 23056-2) into the RESET slot of the switch (Fig. 3), move the shift lever slowly to LOW range, and remove the gauge.
2. Insert the blade of “0” gauge (J 22701-5) into the ADJUST slot of the switch (Fig. 4), move the shift lever to PARK position, and remove the gauge.
3. Check starter operation in all ranges.
4. If the starter operates in:
   • REVERSE range — repeat steps 1 through 3 using the “1-” gauge (J 22701-4) or “2-” gauge (J 22701-3) in the ADJUST slot until starter will not operate in REVERSE range.
   • DRIVE range — repeat steps 1 through 3 using the “1+” gauge (J 22701-6) or “2+” gauge (J 22701-7) in the ADJUST slot until starter will not operate in DRIVE range.

Adjust the second type switch as follows:

1. Position and hold the shift lever in LOW range while inserting the blade of “RESET” gauge (J 23056-2) into the RESET slot of the switch (Fig. 5), exerting sufficient pressure to ensure full penetration (approx. 9/16″) of the blade, and remove the gauge.
2. Insert the blade of “0” gauge (J 22701-5) into the ADJUST slot of the switch (Fig. 4), move the shift lever to PARK position, and remove the gauge.
3. Check starter operation in all ranges.
4. If the starter operates in:
   • REVERSE range — repeat steps 1 through 3 using the “1-” gauge (J 22701-4) or “2-” gauge (J 22701-3) in the ADJUST slot until starter will not operate in REVERSE range.
   • DRIVE range — repeat steps 1 through 3 using the “1+” gauge (J 22701-6) or “2+” gauge (J 22701-7) in the ADJUST slot until starter will not operate in DRIVE range.

Console Mounted Neutralizer Switches (9777866 and 9789717)

Although two types of neutralizer switches were used in 1967 Firebird production cars, the adjustment of each is the same. The 9777866 switch can be identified by its white drive tang (Fig. 6); the second type switch (9789717) has a black drive tang (Fig. 7).

Adjust these switches as follows:

1. Move the floor shift lever into DRIVE range and remove ash tray, trim plate assembly, indicator lens, and housing from console.
2. After loosening the two screws attaching the neutralizer switch to the shift lever bracket assembly, insert a 3/32″ gauge pin in the drive hole (found on face of switch) to a minimum depth of 1/4″ to hold the switch in position.
3. With floor shift lever in DRIVE range and gauge pin holding switch in DRIVE position, tighten the screws to 25 lb. in. torque and remove the gauge pin.
4. Check starter operation in all ranges.

   NOTE: With switch properly positioned, car will start in PARK and NEUTRAL positions only.

5. Install indicator housing and lens, ash tray, and trim plate assembly to console.

Console Mounted Neutralizer Switch (9779665)

This switch is used in 1965–67 Tempest, 1968 Tempest with wood insert console, and 1965–68 Pontiac production cars (Fig. 8). Switch is adjusted by means of an adjustment screw located at the base of the floor shift lever assembly. When properly adjusted, the starter will operate only with the floor shift lever in PARK and NEUTRAL positions.

Console Mounted Neutralizer Switches (1993422)

Two neutralizer switches of the same part number are used in 1968 Firebird and Tempest production cars. The first type has a 1/4″ wide ADJUST slot on the top side of the switch (Fig. 9); the second type has a 3/8″ wide ADJUST slot (Fig. 10).

Adjust the first type switch as follows:

1. • Firebird: Remove outer and inner control handles, console, indicator bulb and housing, and bracket from the shifter assembly.
   • Tempest: Remove glove box, control knob (Turbo HT), outer and inner control handles (Auto. Trans.), disconnect escutcheon from shifter assembly, indicator bulb and housing, glove box lamp, and remove console.
2. Position and hold the floor shift lever in LOW range while inserting the blade of “RESET” gauge (J 23056-2) into the RESET slot of the switch (Fig. 11), exerting sufficient pressure to ensure full penetration (approx. 9/16″) of the blade, and remove the gauge.
3. Insert the blade of “STD.” gauge (J 23056-4) into the ADJUST slot of the switch (Fig. 12), move the floor shift lever to PARK position, and remove the gauge.
4. Check starter operation in all ranges.
5. If starter operates in:
   • REVERSE range — repeat steps 2 through 4 using the “U SIZE” gauge (J 23056-3) in the ADJUST slot.
   • DRIVE range — repeat steps 2 through 4 using the “O SIZE” gauge (J 23056-5) in the ADJUST slot.
6. • Firebird: Install bracket to shifter assembly, indicator bulb and housing, console, and control handles to the shifter assembly.
   • Tempest: Install console, glove box lamp, indicator bulb and housing, escutcheon to shifter assembly, control knob (Turbo HT), control handles (Auto. Trans.), and install glove box.

Adjust the second type switch as follows:

1. • Firebird: Remove outer and inner control handles, indicator bulb and housing, and bracket from shifter assembly.
   • Tempest: Remove glove box, control knob (Turbo HT), outer and inner control handles (Auto. Trans.), disconnect escutcheon from shifter assembly, indicator bulb and housing, glove box lamp, and remove console.
2. Position and hold the floor shift lever in LOW range while inserting the blade of “RESET” gauge (J 23056-2) into the RESET slot of the switch (Fig. 11), exerting sufficient pressure to ensure full penetration (approx. 9/16″) of the blade, and remove the gauge.
3. Insert the “STD.” tab of gauge (J 23056-1) into the ADJUST slot of the switch (Fig. 13), move the floor shift lever to PARK position, and remove the gauge.
4. Check starter operation in all ranges.
5. If starter operates in DRIVE range, repeat steps 2 through 4 using the “O SIZE” tab of gauge (J 23056-1) in the ADJUST slot (Fig. 13).
6. • Firebird: Install bracket to shifter assembly, indicator bulb and housing, console, and control handles to the shifter assembly.
   • Tempest: Install console, glove box lamp, indicator bulb and housing, escutcheon to shifter assembly, control knob (Turbo HT), control handles (Auto. Trans.), and install glove box.

This is a transcription of the original dealer bulletin for easier reading and search. The complete original scan, including the figures, is shown below.

In addition, the waved steel clutch driven plate (Part Number 8623851) has also been revised. Both early and late types are .0605″ thick and are identified by a “U” notch on one tooth; the late type additionally has four teeth shortened (2 on each side) and two teeth omitted (1 on each side) (see Fig. 3 in the scan below).

The revised (late-type) plates are interchangeable with their early-type counterparts for service.

This is a transcription of the original dealer bulletin for easier reading and search. The complete original scan is shown below, including the figures.

This checking procedure should be added to the governor assembly inspection in Sec. 7E and Sec. 7F of the ‘68 Service Manual, and in Sec. N of the Warranty & Flat Rate Manual.

Governor Feed Port Inspection (see the scan below)

1. Hold the governor by its driven gear as shown in the figure.
2. Check the feed port opening. This opening should be a minimum of .020″.
3. If this dimension is less than .020″, the governor assembly must be replaced.

This is a transcription of the original dealer bulletin for easier reading and search. The complete original scan is shown below, including the figures.