Sandvik B26F and B26XLF Boom Service Manual 2007 – PDF Repair Guide

Description

Sandvik B26F and B26XLF Boom Service Manual – 2007 PDF

This is the Sandvik service manual for the B26F and B26XLF rock drilling booms fitted to Sandvik jumbos, carrying a 2007-06-01 document date. It is the workshop document that sets out the maintenance schedule, the step-by-step operating methods for removing and refitting the cylinders, articulation pins, boom assembly and rotary actuator, the checks and adjustments that keep the telescopic extension tube running true, lubrication, tightening torques and lifting instructions. The same file also contains the parallelism setting instructions for the B26F and B26NV booms, the maintenance manual for the B26 NV, B26XL NV and B16 NV booms, the boom control valve adjustment chapter and the hydraulic cylinder overhaul manual. It is a practical, procedure-driven document rather than a sales brochure.

File Details

• Manual type: Service / maintenance manual for hydraulic drill booms
• Brand: Sandvik
• Primary models: B26F boom, B26XLF boom
• Additional models covered in the same file: B26 NV, B26XL NV, B16 NV booms
• Language: English
• Format: PDF
• Page count: 142 pages
• Document numbers shown: 4-200 S-E 2007-06-01 (B26F), 4-300 S-D 2007-06-01 (B26XLF), BG01214871 en-US A.001.1 2018-10-29 (boom control)
• Date: 2007-06-01

Chapters Covered

• Preliminary remarks – safety and about this booklet
• Description – explanation, features, main components
• Maintenance operations – first entry into service, operations at each shift, 50-hour or weekly operations, 200-hour operations, 1200-hour or annual operations, 3600-hour overall inspection and reconditioning
• Tightening torques
• Lubrication and grease points
• Operating methods – removing and refitting articulation expendable pin set, checking cylinder expendable pin, removing and refitting a cylinder, removing and refitting a boom assembly, removing and refitting the rotary actuator
• Check and adjustment – hose condition check, welding condition check with crack detector products, control and adjustment of clearance between armature and extension tube, control of extension tube wear, dismantling the boom extension cylinder
• Lifting and handling – lifting points
• Periodic maintenance table for the B26F and B26XLF boom
• B26F and B26NV booms parallelism setting instructions – boom movements, movements in automatic parallelism mode, parallelism setting, hydraulic diagram in neutral position, boom lift, feed tilt, boom downward, boom swing, feed extension
• B26 NV, B26XL NV and B16 NV booms maintenance manual – preliminary remarks, description, maintenance operations, tightening torques, lubrication, operating methods, checks and adjustments, lifting and handling, periodic maintenance table
• Boom control – boom control block, adjusting boom circuit max. LS pressure, adjusting boom circuit max. pressure, adjusting max. speed of boom movements, boom movement not working, boom working pressure too low
• Hydraulic cylinders – introduction, safety and environmental instructions, cylinder main components, overcenter valves, cylinder maintenance and repair, testing of cylinder, expansion pins

Taken together, the material walks a technician through the whole ownership cycle of these booms: what to check before every shift, what to re-torque weekly, what to inspect at 200, 1200 and 3600 hours, how to pull a cylinder or rotary actuator off the machine and put it back, how to measure and correct the clearance between the armature tube and the sliding extension tube, and how the automatic parallelism circuit is set up and adjusted when a movement stops responding or the working pressure drifts.

Boom Coverage in This Manual

• The B26F is described as a multidirectional, telescopic boom with hydraulic parallelism, a 1200 mm telescopic translation, 45 degrees up and 16 degrees down boom lift, symmetric plus or minus 45 degrees boom swing and a 360 degree rotary actuator roll-over.
• The B26XLF is the longer-stroke variant with a 1700 mm telescopic translation and a correspondingly larger face coverage area.
• Coverage figures, allowed load, weights without hoses, feed tilt, feed swing, divergence and feed extension ranges are all listed for both boom versions in the technical data pages.
• Sandvik DD310 and DD320 jumbos are named as the carriers for the B26F boom, with the B26XLF listed against the DD310, DD310-T, DD210L and DD220 jumbos.

Service Data You Will Find Inside

• Tightening torque tables for metric hex bolts grade 8.8 and six-cut hollow bolts grade 12.9, from M6 up to M42.
• Torque values for cylinder expendable pins by cylinder axis size, given separately for a torque wrench and a pneumatic tool.
• The cylinder expendable pin cut orientation rule and the lubrication requirement before installation.
• Maximum clearance between armature and extension tube, minimum skid thickness and minimum shim plus skid stack thickness, with the levelling procedure that keeps tube and armature axes parallel.
• Permitted extension tube wear on the skid contact area.
• Hydraulic operating pressures for forward and backward tube translation, boom circuit LS pressure, boom circuit maximum pressure, variable displacement pump setting, boom lift relief valve setting and feed extension relief valve setting, with the adjustment sequence for each.
• Grease specification and the locations of pin grease nipples, rotary actuator grease nipples and armature tube grease nipples, plus the warning to keep the rotary actuator grease discharge valves working.
• Lifting weights for the drill feed support and for the boom with drill feed, and the correct versus incorrect slinging arrangements.

Hydraulic Cylinder Section

The cylinder portion of the file explains the difference between the standard two-chamber cylinders and the three-chamber cylinders used for the parallelism function on boom lift, boom swing, feed tilt, feed swing and feed extension. It covers overcenter valve function, overcenter valve removal with the correct pressure-release plugs, disassembly and assembly of the standard two-chamber SMC cylinder and the other type two-chamber cylinder, three-chamber cylinder handling with the warning never to plug the Y-port, bleeding and filling procedures for both A/B chambers and the Y-chamber, cylinder leak testing on line A and line B, and one-screw and two-screw expansion pin removal and installation with the correct alternating tightening method.

Why This Manual Matters

Boom work is heavy, pressurised and unforgiving. The procedures here are the difference between a boom that tracks straight and one that wears its skids, bends a rod or drops a load. The safety chapter is repeated throughout the document and covers stored hydraulic pressure, crushing zones around the central articulation, hot surfaces, high pressure oil jets, protective equipment and the requirement to stop the power pack and decompress the circuit before opening anything. The periodic maintenance table lets a workshop build a genuine service schedule instead of guessing.

What You Can Do With It

With this Sandvik B26F and B26XLF Boom Service Manual you can plan and carry out scheduled maintenance on the boom, torque every articulation and cylinder pin to the value Sandvik specifies, diagnose a boom movement that has stopped working, set the boom circuit pressures back to spec, correct the extension tube clearance before it damages the skids, pull and reinstall a cylinder or rotary actuator safely, and overhaul the hydraulic cylinders including the three-chamber parallelism units. The parallelism setting instructions let you restore accurate automatic parallel holding after a cylinder has been changed.

IMAGES PREVIEW

Correct specifications and correct procedures are what protect the machine, the operator and the next person who works on the boom. This file is delivered as an instant PDF download after payment, with no shipping and no waiting, and it can be read on a laptop, tablet or phone in the workshop or printed for the service truck.