Description

Manitou MLA628 Parts Catalog

You get a box of parts and need to know exactly what fits. Aftermarket catalogs lack the illustration codes and page references that tie part numbers to actual hardware. This Manitou MLA628 Parts Catalog is the same 634-page bound document the dealer uses. Every part number, every illustration code like 4AA368 or AX1590, maps to a specific exploded view. No squinting at fuzzy reprints.

Page 35 for the air filter assembly and intake system. Page 71 for boom assembly – that is the main lift structure. Eighteen pages of cab miscellany split across two cab variants (244624 and 256325). If you need a part for the cab, you need the right variant page. The catalog tells you which.

Air Intake and Filter Assembly: Page 35 Breakdown

Both the air filter assembly and intake system live under the same illustration code 4AA368 on page 35. The manual lists the filter housing, element, clamps, and all mounting hardware. A 4-cylinder diesel engine needs clean air – this page shows you the factory routing from the intake grille to the turbo inlet. The part numbers for the filter element and pre-cleaner are right there. Check this Wikipedia article on diesel engines for background on why intake flow matters, but for part identification, stick with this catalog.

Brake Circuit and Discs: Factory Specified Parts

Brake circuit assembly (6BA138) on page 101 covers the hydraulic lines and master cylinder. For axle-specific brake discs, front axle discs are under AX1593 (page 607) and rear axle discs under AX1597 (page 627). Do not mix them. The catalog lists the exact disc part numbers and the seal kit codes. Parking brake lever assembly (6BA122) is on page 99 – separate from the pedal assembly (10EA126) on page 319. Brake jobs on these machines go faster when you have the right rotors and pads the first time.

Cab Variants: 244624 vs 256325

Two different cab part numbers appear in this catalog. Cab 244624 uses pages 135 through 175 across nine sections (2/10 to 10/10). Cab 256325 uses pages 181 through 225. The cab mounting sections (I and II) are on pages 131 and 133 – common to both. If you order parts for the wrong cab, you get the wrong trim, wiring harness, or glass. This catalog keeps that from happening. Sun screens are on page 229.

Engine Assembly: From Block to Turbo

Engine pages run from 409 to 471. Engine block (AP1538), head assembly (AP1540), rocker arm assembly (AP1541), timing cover and cam gears (AP1542), oil pump and pan (AP1543), valve cover (AP1544), oil cooler (AP1545), head misc (AP1546), water pump (AP1547), exhaust manifold (AP1548), alternator (AP1549), flywheel and housing (AP1550), starter motor (AP1551), turbo installation (AP1552), and gasket kits (AP1553). That is fourteen distinct sections for the long block alone. Turbo parts are grouped separately. Gasket kits page lists every seal and gasket needed for a full rebuild. For more on diesel engine fundamentals, this Wikipedia article on diesel engines covers combustion basics, but if you need turbocharger part numbers, stay right here.

Electrical Schematics: Tracing the Primary Circuits

Four primary electrical schematic pages cover the main harness (11AA684, 11AA992, 11AA993, 11AA994). The safety start circuit (11AA995) on page 369 shows the interlock logic. Relay and fuse details (11CA59) on page 371. Three misc electrical detail sections from page 375 to 395 show connector locations and wire colors. The engine schematic (11AA698) on page 333 covers sensors and ECM wiring. If you run a wire into an MLA628 and you don’t have these diagrams, you are working blind.

Source Validity: Why OEM Catalog Beats Aftermarket

This catalog is original factory print from Manitou North America – no scanning artifacts, no shifted page numbers, no missing illustration codes. Every part reference includes the illustration code (e.g., 4AA368 for air intake, AX2553 for front axle differential) and the exact page number. Aftermarket compilations often omit the illustration code, leaving you with a part number but no view of what it looks like assembled. This manual has 634 pages of factory data, exactly as it left Waco, Texas. For related manuals, see the Manitou MLA628 Parts Catalog or the K-D Manitou MVT 1230L MVT1230LC Parts Catalog – 264 Pages for a different model.

Also check the K-D Manitou K5705, K5797, K5755, K1479, K1787 1991 Parts Catalog if you work on older units. Those manuals cover different chassis, but the illustration code system is the same.

Does this catalog include torque specs or service procedures?

No. This is a parts catalog, not a service manual.

How do I decode the illustration codes like 4AA368 to find the correct part page?

Each code is a six-character ID assigned to a specific assembly group. The alphabetical contents table on page 3 lists every code and its page number. For example, 4AA368 appears on page 35 for both air filter and air intake. Once you find the code in the table, you go to that page – the exploded diagram shows callouts matching the part numbers in the adjacent list. Cross-reference the code with the assembly name (e.g., AIR FILTER ASSEMBLY) to confirm you have the right section. This system eliminates ordering the wrong component when multiple assemblies share similar names.

If you need the correct part number for the boom extending cylinder, lifting cylinder, or any hydraulic component, the catalog has it laid out on pages 289-313. Access the factory manual and get the parts hunt done.

Access the Factory Manual