TM   5-3895-360-13 13-3.  LOWER  UNIT  MAINTENANCE  (VR11C)  (Con’t). NOTE c.  Remove  four  screws  (6)  from  guide  tube  (8)  and gearcase  (3). Refer to Figure 13-3,  Draining and Filling Low- er Unit oil (V11C),  for steps e and f. d. Push down on guide tube (8) and remove two solid disks (5) and rod pin (7) from piston rod (9). e. Fill lower unit (1) with lubricating oil (Item 13, Appen- dix E). e.  Remove  lower  unit  (1)  and  preformed  packing  (4) from gearcase (3). Discard preformed packing, f.  Install  oil  sight  indicator  (2)  in  lower  unit  (1). g. Install tamper shoe (see paragraph 13-1). 13-4.   LOWER   UNIT   MAINTENANCE (VR11). TOOLS: General mechanic’s tool kit . . . . . . . SC 5180-90-N26 Mechanical puller kit . . . . . . . . . . . SC 4910-95-CL-A31 Machine bolt (2) . . . . . . . . . . . . . . TM 5-3895-360-24P REMOVAL a. Remove tamper shoe (see paragraph 13-1). NOTE Refer  to  Figure  13-9,  Draining   and   FIlling Lower Unit Oil (VR11), for step b.   A suitable container should be used to catch any  draining  oil.  Ensure  that  all  spills  are properly  cleaned. b. Remove oil sight gage (2) from lower unit (1) and al- low all oil to drain. NOTE DISASSEMBLY Refer to Figure 13-11, Lower Unit Disassembly Bolts  installation  and  Removal  (VR11),   for steps a and b. a. Remove two screws (11) from base plate (12). b. Install two machine bolts (1 O) on base plate (1 2). Figure 13-9. Draining and Filling Lower Unit Oil (VR11). Refer to Figure 13-10, Lower Unit Replacement (VR11), for steps c through e. 13-8