Tronair 01-0597-0000, Operation & Service Manual, Page: 13 / 21

INS-1582
Towbar Usage Instructions
11/2003 – Rev. 03
- 3 -
BEFORE USING TOWBAR, COMPLETE THE FOLLOWING CHECKLISTS:
Reference Figures 1 & 2 on Page 2.
TOWBAR:
Area of Towbar:
Check:
Shock Assembly: 1. Weld between eye and tube (Are there cracks?)
2. Bolts attaching shock to towbar (Loose, missing, stripped, etc.)
3. Eyebolt (Is it bent, worn down, or deformed?
Towbar Weldment:
1. Tube (Is it bent, dented, bowed, and/or have cracks?)
2. Weld at head end (Are there any cracks in the welds?)
3. Head hole (Is it elongated? Is the ball lok pin attached to the towbar?)
Caster/Skid Plate:
1. Casters (Are they missing or bent?)
2. Handles (Are they broken, bent, or missing?)
3. Bolts (Are they missing or loose?)
Wheel Assembly:
1. Wheels (Are they flat? Is the rim bent?)
2. Axle (Is it bent?)
HEAD:
Area of Head:
Check:
Bolts & Lanyards: 1. Are they loose, missing, or stripped? Are they attached to the head?
Weldment:
1. Welds holding side rails to head rail (Are there any cracks?)
2. Shear Plates (Are there cracks in welds? Are the plates bent?)
Shear Pin Mechanism:
1. Shear Pin (Is it bent or deformed? Are there spares?)
2. Bushings (Are they cracked, chipped, secure?)
3. Pivot Bolt (Are the nuts tight? Are there washers present?)
Area of Head:
Check:
Aircraft Attach Point: 1. Sliding Pin(s) (Are they bent, cracked? Do they slide freely?)
2. Locking Pin (Are they loose? Do they hold the sliding pins securely?)
3. Wear sleeves (Are the welds cracked?)
4. Roll Pins(s) (Are they rusted? Are they missing? Are they loose?)
5. Ball Lok Pin (Is it attached to head? Is it rusted? Is it bent?)
6. Axle Adapter (Is it bent? Is the slot deformed? Are bolts tight?)
SNAP-BAK AND UNIVERSAL TOWBARS:
Area of Towbar:
Check:
Towbar: 1. Spring (Has it taken a set? Loose in the assembly?)
2. Eyebolt (Is it bent, worn down, or deformed?)
3. Tube (Is it bent, dented, bowed, or cracked? Is it rusted badly?)
4. Welds (Are there any cracks in the welds?)
5. Head Hole (Is it elongated? Is the bolt attached correctly?)
Function:
1. Does it snap back?
Head:
1. Pivot Bolt (Is it present along with washers? Is the nut tight? Is it rusted?)
2. Roll Pin(s) (Are they rusted? Are they missing? Are they loose?)
3. Weldment (Is it deformed, bent, or rusted beyond reasonable use?)
4. Lanyard (Is it attached to weldment?)
5. Sliding Pin(s) (Are they bent, cracked or rusted? Does it slide?)