20-GI-009H
Service Bulletin Details
Public Details for: 20-GI-009H
This bulletin provides the calibration procedure for the engine bearing clearance tester. The bearing clearance tester is already pre-calibrated, but additional calibration may be required due to variable shop compressor air pressure when t
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GROUP NUMBER General Information Technical Service Bulletin SUBJECT: DATE 20-GI-009H MODEL(S) DECEMBER 2020 ALL ENGINE BEARING CLEARANCE TESTER CALIBRATION PROCEDURE Description: This bulletin provides the calibration procedure for the engine bearing clearance tester. The bearing clearance tester is already pre-calibrated, but additional calibration may be required due to variable shop compressor air pressure when testing engine rod bearing wear. NOTICE The bearing clearance tester requires connection to a known good air supply during use. Shop air supply must consistently provide at least 50 PSI of air pressure to the tester. Do NOT use a portable air compressor. Be sure to check that the shop air water separator is functioning correctly. NOTICE For Bearing Clearance Tester software related issues, contact GITA at: 888-437-0308 For Bearing Clearance Tester hardware related issues, contact Techline at: 800-325-6604 Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service Advisors, Technicians, Body Shop Manager, Fleet Repair SUBJECT: ENGINE BEARING CLEARANCE TESTER CALIBRATION PROCEDURE SST Information: TOOL NAME PART NUMBER Engine Bearing Clearance Tester (Main Body) KQ231-2T100QQH Spark Plug Rod (Connection for Clearance Gauge) KQ231-2T101QQH Crankshaft Rotator Tool KQ231-2T102QQH Clearance Gauge KQ231-2T103QQH Power Supply Cable KQ231-2T104QQH Test Hose (Air Hose for Clearance Gauge) KQ231-2T105QQH FIGURE NOTE: Normal Warranty Applies. NOTICE Before performing the calibration procedure, verify that the power cable or air hoses are NOT attached to the bearing clearance tester, and that the power switch is set to the OFF position. Calibration Procedure: 1. Remove the two, smaller hex screws located on the bearing clearance tester cover. Hex Screw: 2.5mm hex TSB #: 20-GI-009H Page 2 of 5 SUBJECT: SUBJECT: 2. ENGINE BEARING CLEARANCE TESTER CALIBRATION PROCEDURE Remove the four, larger hex screws located on each side of the bearing clearance tester cover. Hex Screw: 3.0mm hex 3. Lift and remove the bearing clearance tester cover. 4. Verify the power switch is OFF. 5. Follow the EXACT power cable and air hose connection order: 1) Connect the main air compressor hose. 2) Connect the 12V power cable to a stable power source (a fully charged 12 volt battery or an external AC/DC 13.8 volt power supply). 3) Connect the test hose. (The other end of the test hose should be left disconnected from the spark plug rod.) TSB #: 20-GI-009H Page 3 of 5 SUBJECT: SUBJECT: 6. ENGINE BEARING CLEARANCE TESTER CALIBRATION PROCEDURE Turn the power switch ON, and select the AP/VC switch to VC. AP: Pressure VC: Vacuum NOTICE To verify power to main unit solenoids: Toggle the AP/VC transfer switch between AP <> VC. During toggling, a “click” noise will indicate the solenoids are active. 7. Inspect the VC gauge, and verify that the reading is between -73 ~ -83kPa. NOTICE A red overlay on the gauge will indicate the recommended specification. If the VC gauge is within specification, proceed to Step 9. 8. If the VC gauge is NOT within specification, pull the VC knob upwards to activate it. Twist the VC knob to increase (+) or decrease (-) the kPa reading until the reading is within specification. Clockwise: increases (+) kPa reading Counterclockwise: decreases (-) kPa reading After twisting the knob until the kPa reading is within specification, press the knob downwards to deactivate and lock the knob. 9. With the power switch still ON, select the AP/VC switch to AP. AP: Pressure VC: Vacuum TSB #: 20-GI-009H Page 4 of 5 SUBJECT: SUBJECT: 10. ENGINE BEARING CLEARANCE TESTER CALIBRATION PROCEDURE Inspect the AP gauge, and verify that the reading is between 0.1 ~ .11MPa. NOTICE A blue overlay on the gauge will indicate the recommended specification If the AP gauge is within specification, proceed to Step 12. 11. If the AP gauge is NOT within specification, pull the AP knob upwards to activate it. Twist the AP knob to increase (+) or decrease (-) the MPa reading until the reading is within specification. Clockwise: increases (+) MPa reading Counterclockwise: decreases (-) MPa reading After twisting the knob until the MPa reading is within specification, press the knob downwards to deactivate and lock the knob. 12. Turn the power switch OFF. 13. Follow the EXACT power cable and air hose disconnection order: 1) Disconnect the 12V power cable. 2) Disconnect the test hose. 3) Disconnect the main air compressor hose. 14. Reinstall all parts in reverse order of removal. 15. The calibration procedure is now complete. TSB #: 20-GI-009H Page 5 of 5 SUBJECT: