TM 5-3805-280-24-1
Tests
HYDRAULIC PUMP REGULATOR TEST AND
ADJUSTMENT--MAXIMUM FLOW
SPECIFICATIONS
50 5C (120 10F)
Oil Temperature
Engine in Standard Mode Speed
Fast Idle
Work Mode Selector Position
Dig Mode
E Mode Switch Position
Off
HP Mode Switch Position
Off
Auto-Idle Switch Position
Off
Propel Speed Switch Position
Slow Speed (Turtle)
29.9 2.0 sec.
Track Raised--3 Revolutions
From a Running Start Cycle Time
SERVICE EQUIPMENT AND TOOLS
JT05800 Digital Thermometer
Stop Watch
17, 22, and 32 mm Combination Wrenches
Flat Blade Screwdriver
Purpose of check is to test and adjust the maximum flow
rate of pumps so the cycle times (travel speed) for left
and right propel are approximately the same.
1. Adjust track sag for both tracks to specification. (See
9025
procedure in Group 9020-20.).
25
101
2. Install temperature probe on the hydraulic oil
tank-to-pump suction line. (See JT05800 Digital
Thermometer Installation in this group.)
3. Heat hydraulic oil to the specified temperature. (See
Hydraulic System Warm-Up Procedure in this group.)
Oil--Specification
Temperature ........................................................... 50 5C (120 10F)
4. Run machine as specified.
Engine in Standard Mode--Specification
Speed ........................................................................................... Fast Idle
Work Mode Selector--Specification
Position ........................................................................................ Dig Mode
Continued on next page
TX,9025,GG2656
1908JUN981/3
6-232
