Chassis Documentation: Difference between revisions

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'''VIN on buck tag matches jamb label exactly.''' Verified character for character.
'''VIN on buck tag matches jamb label exactly.''' Verified character for character.
=== DSO tag ===
Firewall-mounted. Partially illegible.
{| class="wikitable"
|-
! Field !! Value
|-
| DSO || <code>74</code>
|-
| Special order || <code>3152</code>
|-
| Remainder || Illegible — not scrubbed, preserved as-is
|}
A DSO tag carrying a special order number is physical proof of a fleet special order. Match against the Marti invoice when it arrives.


=== Fleet special-order options ===
=== Fleet special-order options ===

Revision as of 05:19, 1 November 2026

Chassis Documentation

Status VIN, GVWR, and wheelbase confirmed and cross-checked. Trans and axle codes pending chart decode.

VIN

1FDXB70K4JVA01204

Decode:

Position Value Meaning
1FD USA / Ford / incomplete vehicle (chassis cab)
X Restraint / GVWR class code
B70 Chassis series — medium-duty
K Engine code — 429
4 Check digit
J Model year — 1988
V Assembly plant — Kentucky Truck Plant (Louisville)
A01204 Sequential production number

Title and insurance must read 1988 and match the VIN exactly. The incomplete-vehicle build date is October 1987; the body is March 1988. Title as an 88.

GVWR and weights

Field Value
GVWR 28,000 lb
GAWR front 9,000 lb — 265/75R22.5, 22.5x7.5 rims, 120 psi cold, single
GAWR rear 19,220 lb — 265/75R22.5, 22.5x7.5 rims, 110 psi cold, dual

Front and rear GAWR sum to 28,220 lb; GVWR is set 220 lb below the axle sum. Rear axle is a heavy full-floating medium-duty unit — good margin for the blower plan.

Check: confirm current tires are rated for 120 psi cold front. A lower load-range tire makes the label pressure wrong and over-tires the steer axle.

Buck tag

Firewall-mounted, adjacent to VIN and DSO tag. Ford format ("Vehicle manufactured by Ford Motor Company, Made in USA").

Field Value
Wheelbase 275 (275 in)
Type-GVW B70280 (B70 series, 280 = 28,000 lb class)
Body 7
Trans AA — pending decode
Axle 2MN — pending decode
DSO blank — DSO on separate tag

VIN on buck tag matches jamb label exactly. Verified character for character.

Fleet special-order options

  • Built-in traction sanders (hopper and dispenser — photograph mounting and frame attachment)
  • Front tow hooks (factory option on B-series; photograph brackets)

Both point to a municipal or district fleet order, consistent with factory LPG.

Open items

  • AA trans code — must resolve before the shop quotes. Build assumes C6; do not let a quote rest on that assumption.
  • 2MN axle code — ratio drives cruise rpm at 28,000 lb and blower gearing. Check for a ratio tag on a differential cover bolt or the housing.
  • Both resolve via the Marti deluxe report.

Documentation

Photos filed: jamb label, buck tag, DSO tag, sander hopper and mounting, tow hook brackets.

See also