Article 949 - Oil in Speedometer or Tachometer Head

TSB #51 - November 18, 1966
(1966 and Prior Model "N" "H", and "W" Series Trucks with Fuller RT-910 Transmissions)


A change was made Job 1/67 to the .187 diameter core of the speedometer cable from a right hand lay to a left hand lay to eliminate possibility of the core carrying transmission lubricant into the speedometer or tachometer recording head.

When this problem is encountered on a truck equipped with an RT-910 transmission the appropriate left hand lay cable should be installed.

Engine Application Chart
P&A Part NumberClassNHV6V86-71-N8V-711673
C6TZ-17260-D CQW-1000-D
WT-950-D
HT-950-D
H-1000-D
W-1000-D
WT-950-D
C6TZ-17260-F CQN-1000-D
NT-850-950-D
HT-950-D
H-1000-D
W-1000-D
WT-950-D
W-1000-D
WT-950-D
C6TZ-17260-G CW-1000-D
WT-950-D
C6TZ-17260-H CQHT-950-D
H-1000-D
C6TZ-17260-J CQN-1000-D
NT-850-950-D


WARRANTY STATUS - REIMBURSABLE
Oper: Use suggested time schedule
Time: Operation 17260-A