Description

White Mobilift MSB, MA, WC, MY40, MY70 1973 Parts Catalog

If you’re chasing a part number for a 1973 White Mobilift simplex upright and you crack open some reprint that squishes the illustrations, you’re going to end up with the wrong seal kit or a 5/8″ bolt when you needed a 3/8″. This 19-page original factory Parts Catalog from 1973 is what the parts counter had on the bench. It covers the MSB, MA, WC, MY40, and MY70 models – channel-type simplex uprights for 2,000 to 7,000 lb capacity trucks. White Materials Handling Division printed R-2227, and I don’t need to tell you what happens when you grab a spec from a third-party scan. Page 2-3 gives you the 5″ outer rail upright breakdown with part numbers like 35A6790 for the rail outer assembly. That is not a suggestion – that is what you order.

Simplex Upright Parts Breakdown: Rail Width and Model Fit

The catalog splits the uprights by outer rail width and model range. Pages 2-3 cover the 5″ outer rails for MSB, MA, and WC. Pages 4-5 handle the 6-1/8″ outer rails for MA, WC, and MY40-50. Pages 6-7 are for the MY60 and MY70 with the wider rails. Each section lists the rail outer assembly, inner assembly, shoes, bearings, snap rings, and the carriage with wear plates or side thrust rollers. You want the cap-bearing and grease fitting (50A4629)? It is right there under the rail-outer assembly note. No hunting through a generic index – the page tells you exactly which chart to reference. The variable parts chart on page 12 is where the actual part numbers for the lift cylinder and chain carriage live, and you need that page open alongside the upright diagram or you’ll order the wrong rod-chain anchor length.

3-inch, 3-1/4-inch, 3-3/4-inch, and 4-inch Lift Cylinders

Lift cylinders are the heart of the simplex system. This catalog devotes four pages to them. Pages 8-9 cover the 3″, 3-1/4″, and 3-3/4″ diameter cylinders. Page 10-11 are for the 4″ diameter cylinder. Each assembly is drawn with reference numbers that tie directly to the part list. You get the piston head, guide, set screws, hex bolts, and even the sheave-chain assembly (4-3/8″ diameter) with its bushing and grease fitting. If you are rebuilding a 3″ lift cylinder, the 35A12418 head-piston part number is listed on page 2 under the 5″ rail upright – but you cross-check it with the cylinder chart on page 8. That is why you buy the whole catalog, not a screenshot.

Variable Parts Charts: When One Part Number Covers Multiple Models

White Mobilift did not waste paper printing duplicate lists for each model. The variable parts charts on pages 12 through 16 consolidate the part numbers that change with capacity and rail width. Page 12 is for 5″ outer rails on MSB, MA, and WC. Page 13 covers 6-1/8″ outer rails for MA & WC30-50 and MY40-50. Page 14-15 handle MA & WC55-60, and page 16 is for MY60 and MY70. If you need the carriage chain (BL534) or the 3″ lift cylinder, you read the chart on page 12. The charts list the lift cylinder part number by model – for example, a 35A3670 cylinder for MSB20-35. That cross-reference keeps you from ordering a cylinder that is too long for your upright.

Carriage Underclearance: 3 Inches vs. 5 Inches

Carriage charts start on page 17 for MSB, MA, and WC with 3″ underclearance. Page 18 has the carriage charts for MY40-70 with 5″ underclearance. Underclearance is the distance from the carriage floor to the fork surface – get it wrong and your forks won’t sit flat. These pages include the carriage assembly with wear plates or side thrust rollers, the carriage pin, and the thrust bearing. Part numbers like 35A4046 for the bearing thrust are listed with the reference numbers. If you see a carriage with side thrust rollers, the thrust bearing part number changes. Page 18 has a separate listing for that. Don’t assume – check the page.

Does This Catalog Cover Your 1973 White Mobilift?

If you own a White Mobilift with a simplex upright made between 1973 and maybe 1975, this catalog likely fits. It covers MSB20-35, MA20-30S, WC20-30, WC30-50, WC55-60, MY40-50, MY60, and MY70. The catalog does not cover models with full free-lift uprights or triple-stage masts. For those, you need the White Mobilift triplex upright catalog. Also note – the MY70 shares the same upright as the MY60 for the 6-1/8″ outer rail, so page 6-7 applies to both. The variable parts chart on page 16 specifically references MY60 and 70. Check your serial number against the chart to be sure.

Why OEM Print Beats Aftermarket Re-Runs

I have seen third-party parts catalogs that flip the page order, crop the part number column, or reprint the illustrations at 72 dpi until the bolt heads look like blobs. This is the original White Motor Corporation print from 1973. The part numbers are crisp, the reference numbers match the drawings, and the variable charts are printed on their own pages so you don’t have to squint at microfiche. The Automotive Industry Overview has moved on, but a 1973 forklift still uses the same 3/8″-16 x 5/8″ socket head screws that White Mobilift specified. Waste time on a reprint and you will waste money on return shipping. Waste time with this catalog and you get the right part the first order.

Related manuals you might need: Massey-Harris-Ferguson FF 30 GS 1957 Parts Catalog | OEM Fastener Guide for matching fasteners, or Futura FC200-FC400 Parts Catalog – OEM Wear Parts Specs if you work on multiple brands. Also check Longagribusiness 410 DTC, 450, 450 DTC, 470 DTC, 530 DTC 2002 Parts Catalog for similar-era equipment. And if you need a primer on how a lift cylinder works, Internal Combustion Engine is not what you want – stick to the hydraulic section of that OEM manual.

Can I use this catalog for a MY80 model?

No. This catalog covers up to MY70 only. MY80 uprights use different outer rail widths and cylinder diameters not listed here.

What exactly is on pages 8-9 for the lift cylinder?

Pages 8-9 show exploded views of the simplex lift cylinder in 3″, 3-1/4″, and 3-3/4″ diameters. Each assembly is keyed to a parts list that includes the piston head (35A12418), guide, set screws, hex bolts, and the sheave-chain assembly. The 4″ cylinder is on pages 10-11 with its own reference numbers. If you need the rod-chain anchor (5/8″ x 12″ long, part 50A4873), it is listed under the sheave assembly on page 2 but cross-referenced on the variable chart page 12. That cross-index prevents you from ordering a chain anchor that is 4-1/4″ long when you need the 12″ version. The catalog also notes the chain carriage (BL534) and the safety rack load lock – both critical for the upright to lift rated capacity without binding.

You need parts for a 1973 White Mobilift with a simplex upright – the 19-page factory print is what I keep in my toolbox. Access the Factory Manual from AutoRepairManuals and stop guessing part numbers. This is the OEM reference – no third-party errors, no blurred drawings, just the part numbers White Motor Corporation released in February 1973.