GMTRK4
Installation and Operation Manual
PG 3/42
REV: BETA (4/4/2020)
Table of Contents
1. LIST OF FIGURES................................................................................................................................... 5
2. How to Use this Manual ...................................................................................................................... 6
3. Safety First ........................................................................................................................................... 7
4. Application Chart ................................................................................................................................. 8
5.1. Kit Layout and System Location(s) ............................................................................................... 9
5.2. Install Process Outline ................................................................................................................ 11
5.3. Approximate Installation Time ................................................................................................... 11
7.1. Before Starting, Review Parts List .............................................................................................. 13
7.2. Pre-Packaged Electro-Mechanical Kit Items .............................................................................. 13
7.3. Air Fittings and Related Items .................................................................................................... 14
7.4. Electrical Small Components and Related Items ....................................................................... 15
7.5. Bolt-On Mounting Brackets & Special Hardware ....................................................................... 16
7.6. Hardware, Fasteners and Soft Parts ........................................................................................... 17
7.7. Add-On Accessories .................................................................................................................... 19
8.1. Assemble Air Fittings to Air Tank ............................................................................................... 20
8.2. Assemble Air Filter to Air Compressor ....................................................................................... 21
8.3. Disassemble Trumpets from Air Horn Drivers ........................................................................... 21
8.4. Assemble Air Horn Driver to Horn Bracket (GMTRK-4-301) ...................................................... 22
8.5. Insert Square Neck Bolts onto Brackets (GMTRK-4-102, 201) ................................................... 24
Trim Driver’s Side OE Leaf Spring Shackle Bolt
.......................................................................... 25
9.2. Install Air Tank & Compressor Bracket (GMTRK-4-201) & Bolt Plate (-102) .............................. 26
9.3. Install Air Tank ............................................................................................................................ 28
9.4. Install Air Compressor ................................................................................................................ 30
9.5. Connect Air Compressor Leader Hose to Air Tank ..................................................................... 31
9.6. Remove OE Engine Shield & OE Clip-On Nut ............................................................................. 32
9.7. Install Air Horn Driver Sub-Assembly & Connect Air Tubing ...................................................... 33
9.8. Connect Air Horn Tubing to Air Tank ......................................................................................... 35
9.9. Final Trumpet Installation .......................................................................................................... 36