Dealer Service Information Bulletin 68-I-60 – Turbo Hydra-Matic Oil Strainer Replacement
Bulletin 68-I-60 — Pontiac Motor Division Dealer Service Information Bulletin, Section 7E, dated April 18, 1968. Attention: Service Manager.
Subject: Turbo Hydra-Matic Oil Strainer Replacement.
Short answer: The 1968 and late 1967 Turbo Hydra-Matic full-flow oil strainer (Part No. 6437741) has no bypass valve; when contaminated it restricts oil to the pump, causing noise, slipping, or loss of drive — replace it during any major overhaul where clutch material or excessive metal particles are found in the oil pan.
The 1968 and late 1967 Turbo Hydra-Matic Oil Strainer Assembly, Part No. 6437741 [Z] (Gp. No. 4.197), is a full-flow design strainer. It does not have a by-pass valve, and when this strainer becomes contaminated it will restrict the oil intake to the transmission pump.
Contamination of the oil strainer will result in one or more of the following malfunctions:
- Noisy pump due to cavitation
- Slipping
- Loss of drive and/or intermittent drive
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.
Content last modified: June 13, 2026 at 10:06 am
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