Model 2120 Tractor TM-4252 (Dec-70) General Information 10 Separating Assemblies 25-5 CAUTION: Connect battery cable to positive poles of batteries. On tractors equipped with muffler facing downward: Install muffler. Lubricate rubber seal of tractormeter flexible shaft and attach shaft to clutch housing (see 2, fig. 4). Make sure driving tab of flexible shaft engages in slot of camshaft. Do not tighten excessively to avoid damage to the seal resulting in leakage. Secure oil reservoir bleed line to cylinder head cover. Attach front of tractor to engine. CAUTION: Connect ground strap of batteries to negative (-) poles. On tractors equipped with starting fluid adapter:
Connect starting fluid line to intake manifold. On tractors equipped with Thermostart aid: Connect Thermostart aid wire to heater in intake manifold. NOTE: If engine has been overhauled, tune up engines as explained in group 20. REMOVAL AND INSTALLATION OF CLUTCH HOUSING NOTE: Separating and attaching of engine and clutch housing as well as of clutch housing and transmission case is explained below. Where the tractor is to be separated depends on the individual repair operation. If, e.g., repair work has to be carried out on the transmission, separation between the clutch housing and the transmission case will be sufficient. On tractors equipped with power steering:
Disconnect power steering pressure line at connectors. Remove clamp (see 6, fig. 6) and hydraulic pump pressure line 3. Insert wooden blocks between front axle and front support to prevent front support from tipping sideways. REMOVAL Suspend tractor front end and engine to a suitable hoist or support under the engine by means of assembly stand 19.58-90.618. Similarly the rear of tractor should be suspended to a suitable hoist or be supported under the transmission case by means of assembly stand 19.58-90.619. Disconnect battery ground strap. Drain transmission oil.
Separate engine from clutch housing as explained under "REMOVING ENGINE", the tractor front end may remain attached to the engine. Roll engine and tractor front end away from clutch housing. Disconnect drag link at steering arm. Disconnect hydraulic oil reservoir vent line (see 5, fig. 6) at connector on gear shift cover. CAUTION: Move engine properly in line with drive shaft until these shafts come loose of the driven disks of the engine dual-stage clutch, or on tractors with single-stage clutch, free of driven disk and torsion damper. Remove pipe clamps (see 4, fig.
2), screws 2 and retainer 1 which secure suction line 5 of hydraulic pump and return line 3 of oil cooler (oil reservoir if not equipped with oil cooler) to front side of clutch housing. On tractors not equipped with HIGH-LOW transmission and independent PTO: Take care not to lose check valve installed in hydraulic pump pressure line when latter is removed. Printed in Germany