9U7400 Multitach Group
The 9U7400 Multitach Group is used to check the fan speed. Refer to Operator’s Manual, NEHS0605, for the operating instructions for this tool.
6V4950 Injection Line Speed Pickup Group
The 6V4950 Injection Line Speed Pickup Group is another diagnostic tool accessory that can be used with the 6V2100 Multitach. It can be used on all Caterpillar Diesel Engines equipped with 6 mm (.25 in) single wall fuel injection lines. With this pickup group, engine speed can be measured quickly, automatically, and with an accuracy of ± 1 rpm.
Refer to Special Instruction, SEHS8029 for use of the 6V4950 Injection Line Speed Pickup Group.