Assembly and Disassembly of Lower Roller

Caution ・ To ensure safe operations, wear protective devices before beginning work and follow all precautions. ・ When removing devices or positioning devices at the time of installation, use a removal jig and a hammer or steel rod. ・ Follow the precautions below when suspending the load. ・ The liftcrane must be operated by a qualified operator. ・ Do not stand or pass under the suspended load. ・ Check the weight of the roller to determine whether it can be carried by hand or whether a liftcrane must be used. ・ Fix the roller to a level surface so it does not roll. ・ Be sure to repair any parts damaged during disassembly, and prepare replacement parts in advance. ・ If any parts are significantly rusted or dirty, clean them before disassembling. ・ Any foreign matter entering the equipment during assembly can create a malfunction. Therefore, after thoroughly cleaning the equipment with cleaning oil, air blow the equipment, and perform assembly in a clean location. ・ When assembling sliding parts, be sure to coat them with new hydraulic oil. ・ As a rule, replace all O-rings and other seal parts with new parts. General cautions ・ Be careful not to drop precision parts or let bump them with other parts during work. ・ Do not forcefully open or hit parts in an effort to speed up operations. Pay careful attention and proceed slowly so as not to damage any parts, create any oil leaks, or compromise the efficiency of the equipment, etc. ・ Disassembled parts can easily rust or collect dust. Therefore, immediately after disassembling parts, take precautions to prevent the parts from rusting or collecting dust.

Items to prepare •Hexagon wrench (6 mm) •Hammer •Wire clip •Pliers •Gear puller •Screwdriver •Gear oil (Mobile Gear Oil SHC320) •Specialty jigs •Pressing machine •Loctite •Special fiber cloth (Kimwipe) •Micrometer caliper •Caliper •Cylinder gauge

Configuration diagram

Dimension diagram

Jig dimension diagram

1 Roller Part name Q'ty 1

2 Shaft 3 Collar (with plug) 4 Collar (without plug) 5 Bushing 6 Floating seal 7 Pin 1 1 1 2 2 2

8 O-ring 9 Plug 2 1

Disassembly procedure [1] After cleaning the lower roller with kerosene, remove the plug (2) from the collar (1) and drain the oil.

[2] Remove the pins (4) from the shaft (3), and remove the collars (1).

[3] Use a removal jig to remove the floating seal (5) from the collar (1).

[4] After removing the O-rings (7) from the shaft (3), pull the shaft (3) out from the lower roller (6).

[5] Remove the floating seals (5) from the lower roller (6).

[6] Use the removal jig (A) and press to remove the bushings (8) from the lower roller (6).

Assembly procedure [1] Place parts in a rough cleaning container filled with kerosene to clean off any adhered matter that can form sharp points and cause scratches. •Immerse in kerosene until dust, grease, and other adhered matter comes off and floats to the surface. [2] Place parts in a finish cleaning container filled with kerosene and clean while gently moving the parts. After cleaning, wipe away the kerosene with a clean rag. •Place the parts in a location free of dust and moisture and use compressed air to dry the parts. After drying, coat parts with engine oil. [3] Use the jig (B) (3) and hammer (4) to install the bushings (2) in the lower roller (1). •Use new bushings.

[4] Install the floating seals (5) to the lower roller (1). •Use new floating seals.

[5] Install the shaft (6) with grease applied on its surface in the lower roller (1), and set the Orings (7) with applied grease on the shaft. •Use new O-rings.

[6] Install the floating seal (5) on the collar (8). •Use new floating seal.

[7] Apply oil (*1) to the surface (lip section) of the floating seal (5).

[8] Press fit the collars (8) on the shaft (6) and install the pins (9).

[9] Place the assembly parts in the water tank (11) and use compressed air (10) to check for leaks.

Compressed air pressure: 0.2 MPa

[10]Fill oil from the plug hole (12) and install the plug (13). •Clean the assembly parts and dry with compressed air.

This completes the assembly.