Engine RPM, hydraulic pressures, and torque values.
The machine uses a dual-function cable/radio remote. If the cable is damaged, an emergency cable is typically stored beneath the hood. Safety Systems:
The BMP851 does not use a conventional transmission. Instead, it relies on a sophisticated hydrostatic drive system. The workshop manual guides you through the variable displacement hydraulic pumps and the fixed displacement hydraulic motors located inside the drums. It features specialized teardown steps for replacing worn central rotating groups, pistons, and cradle bearings within the pumps. 3. Hydraulic and Compaction Systems
Test battery voltage; reset all E-stops; check remote control connection.
Because the BMP851 is operated remotely, its electrical infrastructure is complex. The service manual features comprehensive wiring diagrams detailing: The radio control receiver and transmitter pairing process. Cable remote backup configurations. Smart sensor locations and diagnostic fault codes. Alternator, starter motor, and battery circuits. Engine Servicing (Hatz Diesel) service manual for bomag bmp851
: Checking/changing engine oil, oil filters, and valve clearance. Cooling : Cleaning cooling fins and the air intake hose. Hydraulics : Replacing hydraulic oil and filters. Vibrator : Changing oil in the vibrator shaft housing.
The engine troubleshooting section will direct you to check the air intake restriction indicator, bleed the fuel lines to eliminate air pockets, or check the fuel injection pump timing. 5. Tips for Using and Storing the Service Manual
Always install the steering lock bar before working in the articulation area. Failure to do so can result in severe crushing injuries if the chassis pivots.
This article outlines what the Bomag BMP 851 service manual covers, why it is essential for maintenance, and how to safely execute critical repairs. 1. Document Overview & Identification Engine RPM, hydraulic pressures, and torque values
Ultimate Guide to the Service Manual for Bomag BMP851 The Bomag BMP851 is a heavy-duty, radio-controlled multi-purpose compactor designed for trench work, pipe laying, and cohesive soil compaction. To keep this powerful machine operating at peak performance and ensure operator safety, access to the official factory service manual is essential.
Step-by-step instructions on hooking up pressure gauges to the test ports to measure charge pressure, high pressure, and relief valve limits. Section 4: Electrical System and Remote Control
But if you look deeper, the service manual for the BMP 851 isn't just a book of repair instructions. It is the DNA of the machine. It is a translation of the engineer’s intent.
is a 1.5-ton multi-purpose compactor designed specifically for earthwork in confined spaces like trenches and backfills. To maintain its performance and safety, owners rely on the , which cover everything from routine fluid checks to complex hydraulic troubleshooting. Core Service Manual Components Safety Systems: The BMP851 does not use a
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Most BMP851 units use either a (petrol) or a Lombardini LDW series (diesel). The manual includes a dedicated sub-section for valve clearance adjustments, carburetor tuning, and decompression valve checks specific to the mounting configuration.
| If you need to... | The manual helps? | Notes | | :--- | :--- | :--- | | | Yes | Gives exact fitting torque and fluid type (ISO VG 46) | | Adjust the steering linkage | Yes | Shows eccentric adjustment on the orbitrol valve | | Replace the vibration bearing | Yes | Best section of the manual – use it | | Diagnose a no-start electrical issue | No | Get a multimeter and ignore the manual's wiring diagram | | Rebuild the propel pump | No | Only shows removal/installation, not internal repair |
travel motors, providing flow ratios and pressure limitations (250 bar high pressure). Maintenance Schedules
Repair steps for the internal eccentric weights inside the drums that generate compaction force.
24 Liters (6.3 US gal) — use standard ultra-low sulfur diesel.