John Deere GM1072 Lawn Mower User Manual


 
Assembly 29
5WPMAN0242 (Rev. 5/2/2008)
1. Remove left belt shields (13).
2. Remove cap screw (6) and lock washer (7) that
secures gearbox stand to mounting lug (B).
Remove cap screw (4) and flanged lock nut (5)
from lower hole on mounting lug.
3. Align upper hole of caster arm (3), upper hole of
mounting lug, and gearbox stand. Secure with cap
screw (6) and lock washer (7).
4. Align lower hole of caster arm and lower hole of
mounting lug and secure with cap screw (4) and
flange lock nut (5).
5. Insert caster yoke and wheel assembly (8) into
caster arm. Install spacers (9) and spring (10).
Secure using cap screw (12), lock washer (7), and
flat washer (11).
NOTE: Make sure spacers are installed in the
same orientation for all four caster wheels. See
Cutting Height Chart, page 10
6. Repeat steps for right rear caster arm installation.
7. Install left and right belt shields.
Install Offset Link
See Figure 28.
Figure 28. Offset Link Installed
1. Remove cap screw (6), flange lock nut (5), bushing
(not shown), and U-link (1) from A-frame bars (3).
2. Attach offset link (2) to the top hole in left mounting
lug (B). Secure using cap screw (4) and flange lock
nut (5). Repeat for right side.
3. Place offset links on outside of A-frame bars.
4. Align the holes in offset links, A-frame bars, and U-
link. Secure using cap screw (6), bushing, and
flange lock nut (5) previously removed.
Install Gearbox Shield & Driveline
See Figure 29.
1. Position gearbox shield (1) over gearbox input
shaft and align holes.
2. Orient grease access hole and chain attachment
lug as shown.
3. Secure shield to gearbox using four cap screws
(2), flat washer (3), and lock washer (4).
4. Slide QD yoke (5) of driveshaft assembly onto
gearbox input shaft. Make sure QD yoke is seated
securely in groove of gearbox shaft. Attach shield
anti-rotation chain (6) to drive shield as shown.
5. Place driveline in PTO hanger bracket.
Figure 29. Shield & Driveline Installation
1. Link, U-bracket
2. Link, Rear offset
3. Offset link, .38 x 2 x 25.88 (A-frame bars)
4. Screw, HHCS 1/2 NC x 1-3/4 GR5
5. Nut, Flanged lock 1/2 NC
6. Screw, HHCS 1/2 NC x 4-3/4 GR5
1. Shield, Gearbox (counter-cone)
2. Screw, HHCS M8 x 1.25 x 16 mm
3. Washer, Flat 5/16 standard
4. Washer, Lock 5/16
5. QD Yoke
6. Anti-rotation chain